Germany shows us why it isn't enough to simply have words that say free speech exists; you need courts that are willing to enforce these provisions and people willing to stand for these rights, as we are fortunate enough to have in the United States.
Yeah, I mean in the 1800s demanding the immediate uncompensated liberation of slaves technically "infringed upon the rights of others". To convict someone of a crime here there typically needs to be both a guilty mind (mens rea) AND a guilty act (actus reus). I can think and say I want to genocide the furries, but until i take an active step to do so, no one's rights have been infringed and no act has occurred. Thought crime is an evil concept.