Sabrina Fulton, the mother of Trayvon Martin, who was killed in February 2012 by George Zimmerman, endorsed Democratic presidential candidate Hillary Clinton on Monday in an op-ed for CNN.

Fulton said she is supporting Clinton because the former secretary of state is the only candidate running who is “tough enough” to champion change on gun control and issues concerning the Black Lives Matter movement.

“As first lady, she advocated for the Brady Bill and convened meetings on school violence,” Fulton wrote. “As a senator, she voted to extend the assault weapons ban and against an immunity law that protects irresponsible gun makers and dealers from liability.”

“In spending some time with her in person, I also found a mother and a grandmother who truly heard me, and understood the depth of my loss,” Fulton added.

The Black LIves Matter movement was founded in 2013 by Alicia Garza, Patrisse Cullers, and Opal Tometi, after George Zimmerman was acquitted of killing Trayvon Martin.

A tweet of Fulton’s CNN article was sent out on Monday from Hillary Clinton’s Twitter account:

“Young people need a president who will stand up to inaction [on guns]…that person is Hillary.” –@SybrinaFulton https://t.co/MNPZP8w6yb — Hillary Clinton (@HillaryClinton) January 11, 2016

Despite leading Democratic presidential candidate Bernie Sanders among African Americans, Hillary Clinton’s support among her party’s most loyal bloc “plunged” last fall, according to The Washington Post.

“Hillary Clinton’s core agenda is an agenda for black America,” Maya Harris, a senior policy adviser to Clinton, told MSNBC in an interview last November.

Follow Jerome Hudson on Twitter @jeromeehudson