You are free to voice your truth, no matter what it is. That's free speech.
And when people voice theirs, and it's vile ugliness and hate, you are free to voice yours in opposition. That's free speech.
Annnnnd if you don't, guess what? That just means you're a disgusting coward. It doesn't mean you respect free speech.
Respect for free speech is best expressed by using yours, to oppose what you claim to believe is wrong.