You like many people need to understand what freedom of speech really is. Saying you want to kill the president like many other things said could actually be illegal. Freedom of speech doesn't simply mean you can say whatever it is you want. Things like yelling, "bomb", "he has a gun", or "fire" in a crowd when there really isn't is illegal. Things might cause violence such as suggesting to kill the president or others also would be illegal. L2 Bill of rights.