A video of a man cutting his semi-automatic weapon in half has gone viral following last week's mass shooting at a Florida high school, prompting a social media movement decrying easy access to high-powered assault weapons.

Scott Pappalardo of New York state is the star of a clip posted on Facebook that had been shared more than 360,000 times as of Tuesday afternoon. It shows him taking a power saw to the barrel of an AR-15 assault weapon, saying he wanted to make sure it would never be used in a massacre like the one that killed 17 students and faculty last week in Florida.

"This isn't the answer to solve all the problems. Quite frankly, there is no one answer. There will always be people that will want to kill and will do it one way or another," Pappalardo says in the video. "But they are not going to do it with this gun. And I'm hoping that maybe someone will see it and say, 'Maybe I'll do the same thing.' "