Neither the left nor right are monolithic enough to make those generalizations. The anti-communism suppression of the McCarthy era is a counter-example of that

Neither the left nor right are monolithic enough to make those generalizations. The anti-communism suppression of the McCarthy era is a counter-example of that resonance & plenty of left wing examples of the exact idea of "more speech is what is needed to extinguish bad ideas." Those are counter examples to demonstrate it is not a monolithic group in neither time nor space.