They will stay silent, and express their opinion in the voting booth

Maybe the best response is not to stay silent, but rather to craft a non-opinion that looks like an opinion of agreement no matter who comes across it. But maybe not.

You have to walk a fine line and post some material, but not offensive. No response at all can be judged poorly. I’ve been in multiple situations where “silence = supporting the perp” so statements must be made.

If you’re completely off the grid it can be difficult to get jobs in tech.

You've mistaken that I assume you agree or disagree with my own position. You've haven't stated such.

The agreement I referred to was in that others are also scared of the consequences of sharing their opinion here.