 It is a demagogic silencing tactic. In the current moment, we don't yet know precisely what motivated Trump's would-be assassin, but it's self-evident he wasn't a Trump fan and had reportedly donated to a leftist organization while also registering to vote as a Republican, right? That seems like kind of a messy situation. It's unclear what his motives were, and his ideology might have been a big, confused, muddled situation, and he was deeply disturbed.