Alec Baldwin has a history of opposing the NRA and gun rights activists

• Alec Baldwin has frequently spoke out against the NRA and other gun rights activists.
• Baldwin discharged a prop firearm that contained a live round on the set of "Rust" Thursday.

Alec Baldwin, who discharged a prop firearm on a film set Thursday, killing a cinematographer, has a history of speaking out against the National Rifle Association and other gun rights activists.

Baldwin discharged a prop firearm on the set of the western film "Rust" in New Mexico, killing cinematographer Halyna Hutchins, 42, and injuring director Joel Souza, 48,.

The incident led to calls from those across Hollywood and the entertainment industry to end the use of firearm blanks.

And Baldwin himself has a notable tenure of speaking out against gun rights advocates, including the NRA.

Baldwin in 2018 joined a coalition of other celebrities and activists in forming the "No Rifle Association Initiative," which aimed to reduce the NRA's sphere of influence on American politics and society, according to a report in The Guardian at the time.

The group hoped to curb the NRA's influence by encouraging voter registration, demonstrations, and boycotts, the report said.

Baldwin also tweeted at former NRA spokesperson Dana Loesch back in 2018 after the gun rights group released a trailer for Loesch's show.

"The Second Amendment is not a moral credit card that buys you all the guns you want," he wrote. "That law needs to be rethought."

-AlecBaldwin(HABF) (@AlecBaldwin) March 5, 2018

The NRA could not be immediately reached by Insider for comment.

Following Thursday's shooting Baldwin released a statement saying his "heart is broken."

"There are no words to convey my shock and sadness regarding the tragic accident that took the life of Halyna Hutchins, a wife, mother and deeply admired colleague of ours," Baldwin tweeted on Friday.