I agree with opposition to ad hominem attacks and doxxing, but the first is just a manifestation of public protest, which is well established as a valid expression of free speech. If (to use a straw example) someone is free to vote to deny rights to a group of people I consider fundamental (or, conversely, to give them rights I don't consider valid) I should be free to vote (through collective action) to deny them employment.

To claim otherwise would seem to place business and company culture beyond the reach of the public interest and the scope of society, which is a position not even free governments enjoy.