No, nothing about this post is true. Just because two people agree doesn't mean one influecned the other. Further, he also had a lot of left wing rhetoric. So if you are going to insist that his motivation was simply based on what he heard from politicians then you must also say that his motivation was about all the left wing garbage he also spoke of. Otherwise you risk being as inconsistent as using a username after a hitman and railing against violence or guns. Oh wait you have already done that.
Nothing about this comment is true