You are missing the point. Whether you use your overblown fear of terrorist attacks to shut down mosques or to shut down free-speech on campus is irrelevant. Either way you are trampling on rights.
It's not 'fear of terror attacks' that is shutting down right-wingers speaking on campus, nor is it trampling on anyone's rights when that happens. If you think it is, then prove it: point to the specific right that's being trampled on when a group of citizens protests and shuts down a speech.
I will agree with you that it's distasteful, and I hate to see it. But it's not illegal nor is it unconstitutional for it to happen.
There are Americans right now who are using the 9/11 attacks, as well as other attacks here and abroad, to suggest that Muslims must be stopped. They are saying that mosques should be watched, that Muslim speakers should be prevented from speaking and that Muslims in general should be feared.
There is no argument You are making the exact same argument. Accept you are using right wing attacks instead of 9/11. In reality... both right wing terrorist attacks, and Muslim terrorist attacks are numerically minuscule.
I am making no such argument, I have no idea where you're getting this from. But you are correct that there is a large right-wing movement to do exactly that.
You say that Muslim extremists are right wing extremists... this is a silly argument, but fine. Are you in favor of shutting down mosques then as well as conservative political rallies?
Well, it's a fact that Muslim extremists are right-wing extremists. I have no idea why you think otherwise. Their complaints about America are that we aren't Conservative and religious enough.
That's as right-wing as it gets.
I'm not in favor of shutting down mosques OR 'Conservative' political rallies, personally. I'm no fan of Nazis or white supremacists, though, and if our citizenry doesn't want to tolerate them in their cities, I understand why they occasionally take matters into their own hands.
This is about partisanship rather than about principle. If you can see why one half of this argument is bogus but not the other... then you stumbled upon the problem.
This is a lazy 'equivalence' argument on your part that isn't supported by the facts. You're positing that the Anti-Fascist movement in this country represents a similar threat to the right-wingers they are against. From a data point of view, you're completely wrong, and from a rhetorical point of view, you're also wrong.