Freedom of speech, remember? If conservatives seriously believe that words are just words and that you can say anything that you want because the First Amendment allows all speech, then they should leave Maxine Waters alone.
Maxine Waters is free to say what she wants, just as the rest of us are free to call her a borderline-illiterate race-baiting partisan hack.
Remember that when you are chastising people for criticizing conservatives. And that hack certainly has accomplished more than you ever have. What do you do?