If this chap turns out to be a supporter of Bernie Sanders, it's about as relevant to this attack as Salman Abedi's support for Manchester United was to him blowing up a load of innocent children, women and men.
There are nutcases of all shapes, sizes and mindsets and no politician on earth is immune from having one as a "follower".
What we can say for certain is that Bernie Sanders has at no stage ever used rhetoric which can be construed as incitement to violence, especially gun violence.
That hasn't stopped you trying to link him to this attack for your own nefarious reasons, ie. you don't like him, in fact you hate him, so let's try and smear him.
Your modus operandi is straight from the gutter, the same kind used by The Sun and the Daily Mail to try and smear Jeremy Corbyn. That's no surprise to anybody familiar with your posting style.
You tried this before here and were caught out telling porky pies.
What we can also say with with certainty is that no Republican party politician or supporter is any position to go around throwing smears at opposition politicians in such a manner, given that the Republican party has given long-running, uncritical support to the gun lobby, including allowing mentally ill people to buy assault rifles without background checks. No gun massacre, including Sandy Hook, has moved them from that position.
Republican rhetoric has always been a dog whistle to the nut job militia brigade who still think it's 1837 and promote the utterly insane idea that all government is tyranny. As I previously wrote, that only holds up in practice when it's a Democrat.
And for a Trump supporter to try and smear Sanders and moaning about "hate" from "the left", well, sorry, but I almost fell around on the floor laughing at that, for reasons obvious to anybody with an IQ above 80.
I don't remember you coming on here to express your outrage after the Quebec mosque massacre, despite the clear and obvious link between that incident and the type of right-wing hate speech that Trump engages in.
That's the thing that really gets you.
You know full well there's a clear link between that type of right-wing hate speech (which you also regularly engage in - it's pretty much your entire method of "debate") and incidents like the Quebec mosque massacre.
And you also know that there's no link whatsoever between this sort of attack and anything Bernie Sanders says or has ever said.
There's a clear difference which you know exists, but, instead, you choose to engage in false equivalence - actually, it's not even false equivalence - it's outright denial and deliberate twisting of the truth in an attempt to "win" an argument on the INTERNET.
That's the sad world you inhabit.