Citizen activism is on the rise, from teenagers to senior citizens, on issues from gun safety to immigration. In the suburbs of Boston, progressive Indivisible groups and local “huddles’’ such as Milton Persists are supporting women candidates running for local and statewide office.

The South Shore Young Democrats, formed the day after Donald Trump was elected president, holds monthly meetings with speakers on transgender rights, climate change, immigration, health care access, and other subjects.

Moms Demand Action, a gun safety organization that formed the day after the Sandy Hook school shooting in December 2012, has groups throughout the state.

And March Forward Quincy focuses on human justice issues, including immigration, accompanying those affected by Immigration and Customs Enforcement raids to court and helping their families.

Recently, US Senator Elizabeth Warren told a packed auditorium at Weymouth High School that she is “deeply worried’’ about democracy under Republican rule but is “deeply optimistic’’ because of a groundswell of citizen activism.

“People are getting into the fight who have never been in the fight before, and people in the fight are raising their voices,’’ she told a crowd of 750. “Thank you for caring enough about democracy to show up. It is an honor to fight alongside you. We have got to save our country.’’

Such activism has sprung up throughout the state. Moms Demand Action has seven groups in Massachusetts, including a North Shore group, a Central Mass. group, and a Middlesex North group. The Young Democrats has about a dozen chapters statewide, including in the North and West suburbs. And Warren has held Town Halls throughout the state, in places like Framingham, Salem, Concord, Franklin, Malden, Lowell, Revere, Marshfield, and Gloucester.

Michael Kaplan, chairman of South Shore Young Democrats, formed that chapter of the statewide group on Nov. 9, 2016. Kaplan, who moved to Massachusetts from Florida for law school, now lives in Weymouth and at 27 has his own legal practice in Boston.

He says that moving from a red state to a deep blue one wasn’t as startling as some might think. “People like to talk about Massachusetts as this bastion of liberalism, but really it’s not,’’ he says. “We’ve got a conservative governor and a State House very reluctant at times to make progressive changes as opposed to sticking to the status quo.’’

His group welcomes those from 18 to 35 years old. “Young people, historically, have been largely ignored in the democratic process, which is partly our fault since voter turnout among our generation is usually very low,’’ Kaplan says. “But I think young people across America have realized that, if we want our voices heard, we need to start speaking up.’’

Kathleen Berry is the South Shore group leader for Moms Demand Action, a national group founded by mothers, which also counts men among its members. She stresses that the group respects the Second Amendment and consists of both gun owners and those who don’t own guns. “We don’t talk about gun control; we talk about gun violence prevention and gun safety,’’ Berry says.

The group holds lobby days at the State House, and tallies which lawmakers support what legislation, “and we vote accordingly,’’ she says.

In addition, its members educate the public about keeping unsecured, loaded guns away from children. “There are so many preventable and unintentionable deaths of children, and let’s not forget about suicides,’’ Berry says.

Though Massachusetts has tougher gun laws than most states, there’s room for improvement, she believes. Her group is pushing for a “red flag’’ bill that would allow law enforcement to seize guns from a dangerous person. Five states have passed such legislation, which is pending in several others. In Massachusetts, the bill is stuck in committee.

“We are advocating to get that out of committee and passed,’’ Berry says. “We believe Parkland [high school shooting] could have been avoided if Florida had a red flag law.’’ Needless to say, the National Rifle Association opposes the measure.

The Moms will be at the March for Our Lives on March 24, organized by students at Marjory Stoneman Douglas High School in Parkland, Fla., after a former student with a semiautomatic rifle killed 17 people there on Feb. 14.

Berry is heartened by the activism she is seeing these days. “Something has changed,’’ she says. “A lot of people who have been sitting on the sidelines are jumping in and saying, ‘What can we do?’ People are just weary of the lack of forward progress . . . even in Massachusetts. We are all shattered by the tragedy in Parkland and all the others, but it’s a hopeful time in the sense of people power.’’

Indeed, students at several schools south of Boston walked out of classes for 17 minutes on March 14, joining thousands of students around the country who want to stop gun violence. The walkouts are in honor of the 17 who were killed in Parkland.

At Weymouth High, Elizabeth Warren told the crowd that people like the students and parents and grandparents in attendance were the reason why the Affordable Care Act was not repealed: “We won because people spoke up and had their voices heard.’’

When a student asked her how he could help — “I can’t vote yet’’ — Warren told him he was off to a good start: “You’ve shown up at a political event and asked a question.’’ She advised him and other young people to speak out on social media, form a student group to focus on an issue, and talk to people who don’t agree with them.

“Frankly,’’ she said, “it’s your future on the line.’’

Bella English writes from Milton. She can be reached at english@globe.com.