Hollywood and/or the music industry put this into their heads.
These bold, decisive acts of action like this or like double tapping, which TV introduced to the public in the 1980s? and that criminals suddenly adopted for a long period of time, are picked up from watching things mostly, they see it and absorb it and incorporate it into their acting out in real life, their lives of being criminal action figures, living the life, taking on the world, taking charge, being the tough guy.
When one action figure first tore out the page of a public phone book in a movie, rather than copy down the number, some of us groaned because it was a powerful visual and sure enough, phone books all over came up missing pages as the gesture was adopted.
Hollywood and/or the music industry put this into their heads.
On the serious side. God help this family and our nation.