The number of hate groups in the United States rose during 2016 for the second straight year, driven by a surge in anti-Muslim groups, according to a new report from the Southern Poverty Law Center.

The center counted101 anti-Muslim groups nationwide last year, about three times as many as the 34 that were identified in 2015. “Anti-Muslim hate has been expanding rapidly for more than two years now, driven by radical Islamist attacks ... the unrelenting propaganda of a growing circle of well-paid ideologues, and the incendiary rhetoric of [President] Trump,’’ the center said.

In all, it counted 917 hate groups in the United States last year, up from 892 in 2015 and 784 in 2014.

The center counted 28 hate groups based in New England in 2016, up from 26. Of those:

■ Massachusetts accounted for 12 last year, up from 10 in 2015.

■  New Hampshire had six in each year.

■  Connecticut accounted for five such groups, up from two.

■ Maine had three, up from two.

■  Rhode Island accounted for one, down from three.

■ Vermont accounted for one group, down from three.

MATT ROCHELEAU