Why would the leftists want to silence him?
A very interesting question. One would think that lies will prove themselves in short order. Like what happens with progressives, leftists democrats communists etc. So why would leftists want to silence him, or any other truth teller for that matter.
The answer is obvious. It is only truth that angers the left.
One thing you can add here is that the Left cannot survive if the truth is known. That is why they fight the truth at every turn.