Also, a corollary: employment monopolies can be established with blacklists. Refusing to hire someone because they were placed on a blacklist for protected spe

Also, a corollary: employment monopolies can be established with blacklists. Refusing to hire someone because they were placed on a blacklist for protected speech is wrong (and I believe, illegal). After the Damore incident there were numerous reports of people within Google openly bragging about maintaining such blacklists.