It is not just those people being silenced though. It is people who stayed home, maybe their views are not quite as radical as someone who would protest, or maybe they tend to be more politically apathetic (ie most people).

When those people watch Fox News (http://www.foxnews.com/tech/2017/08/14/twitter-users-identif...) and see what is happening to those people for their speech and actions, they are being silenced.

These are also probably the people more amenable to changing their views. It's got be pretty hard to swing someone with a tiki torch marching down the street, but someone who feels sympathetic to their views could maybe be reasoned with if they would talk about it.