Teens and adults jotted their hopes for the future on large colorful sticky notes and placed them at the end of a sprawling timeline on the library windows: “Equal access to health care for LGBTQ+ folks.’’ “Options on driver’s license for pronouns different [than] ‘he’ and ‘she.’ “Taking youth seriously about what they need.’’

The Massachusetts Commission on LGBTQ Youth has accomplished a lot in its 25 years, but there’s still much work to be done — especially in an era in which Donald Trump has thrown the weight of the presidency behind an antitrans agenda that very week, said speakers at the agency’s anniversary party Saturday afternoon.

The party at the Grove Hall branch of the Boston Public Library in Dorchester drew dozens of adult and teenage members from the LBGTQ community, discussing the past, present, and future of their rights.

Said Chacon, a 14-year-old high school student, came in support of his 19-year-old brother, Griz Flores, who is transgender.

“In this world — even in my own family — a lot of the time, that is not taken seriously, looked down upon, and [my brother is] actually belittled for it,’’ said Chacon.

He looks up to his brother, Chacon said. And though his presence at the gathering was a small gesture, he said, “Even the littlest gesture can go a long way.’’

Flores said it was strange to come back to Dorchester — where he had experienced rejection from the community and from his Latino Christian family — to attend an event in support of his identity.

“I’ve never felt like this is an area, space, community where I can be out about who I am and feel safe or welcomed or accepted,’’ said Flores. “... I’ve never felt like this here.’’

When it came to strategizing ways to support LBGTQ youth, there was collaboration across generations. For instance, Sheldon Ross, a high school math teacher, asked how he can be supportive to LGBTQ students, beyond referring them to resources, when his subject doesn’t automatically lend itself to social and political discussions.

Youth in attendance suggested that when writing scenarios for assignments and tests, Ross include non-heterosexual relationships, non-Anglican names, and they/them pronouns, as both a signal to LGBTQ students that he understands them and a chance for non-LGBTQ students to become more familiar with the concepts.

The agency was established in 1992 as a governor’s commission by Governor William F. Weld in response to an epidemic of suicide among gay and lesbian youth, and it was given expanded powers in 1998 by Governor A. Paul Cellucci, according to the agency’s website.

Both governors were Republicans, Democratic state Representative Elizabeth A. Malia told the gathering. This fact, and the number of notable Republicans who spoke out against Trump’s recent ban on transgender people in the military, are important reminders of why we “should not assume that people who are of a different political label’’ are opposed to LGBTQ rights, she said.

In 2006, Governor Mitt Romney sought to dissolve the governor’s commission, but the state Legislature protected it by making it a legislative commission instead, according to Malia.

Discussing the evolution of LBGTQ rights, Grace Sterling Stowell, executive director of the Boston Alliance of Gay and Lesbian Youth (known as BAGLY), spoke of how the discussion has expanded to include a greater focus on intersectionality: the interconnected nature of social categorizations such as race, class, and gender that can create overlapping and interdependent systems of discrimination or disadvantage.

Speaking at a Q&A discussion among youth, Evan Locke said that when he saw the notification on his phone that Trump had won the election, he cried for two hours and brushed off attempts by friends to tell him that everything would be OK.

“I do have a lot more to lose than them,’’ said Locke. “I am queer, I am trans, I’m an immigrant, I’m also a person of color, I’m also disabled . . . All of those things were constantly under attack by him.’’

The 19-year-old BAGLY cochair said he has been blocked by the president on Twitter. Locke said he responded to a tweet by the then-candidate pledging to fight for the LGBT community by pointing out the numerous instances that Trump and his associates had done the opposite.

Miosoty Suárez, a 25-year-old outreach specialist at Boston GLASS (Gay & Lesbian Adolescent Social Services), said that Trump’s rhetoric had sparked more political involvement from youth.

“To spite Trump, it is only creating a stronger sense of community within us, and especially with the youth,’’ said Suárez. “Because it is affecting them — after everything that has been done to try to propel us forward.’’

Nicole Fleming can be reached at nicole.fleming@globe.com.