Is that a headline from Mother Jones or did you just make it up? Crumbley is deranged a 15-year-old kid. He had texted that he planned to rape, torture and kill a girl in his school. He said he enjoyed killing a family of birds. He admired Hitler and Jeffery Dahmer.
Sorry dude, but a fake headline from an unknown source does not prove anything. How was killing 4 people (whom he planned to kill) and wounding 7, is any of that going to get Biden impeached. Was Biden helping him plan who to kill? Did Biden give him the gun to shoot kids with?
Then there is the other side of that. Let's say, for example, your headline is correct, even though I could not find anyone else reporting it. Former Arizona Congresswoman, Gabby Giffords was shot by a leftist who didn't think she was as radical as she should have been. Let's just say for example that he did this killing because no one likes Biden. He has the lowest approval rating of any president ever. Even most Democrats are feeling buyer's remorse for voting for him.
But I still think your headline is fake. Because 15-year-old kids don't know anything, let alone who the president is.