Freedom of speech is not the only right there is, and it is not some sort of 'super right' that trumps all others.
FCC rules - an argument could be made that this is a restriction of speech. However, an argument could also be made that the public should have the freedom to decide how a scare public resource (airwaves) can be used. Does Germany have no such freedom for the public to influence use of public resources? If not, score one more freedom for the US.
Lawyers - I guess you mean libel/slander laws. Does Germany have no right of a person to seek redress for being lied about? If not, score one more freedom for the US
Facebook - Does Germany have no freedom of the press, that is, the right to decide what you will and will not publish using your private property? If not, score one more freedom for the US
General politeness - wtf? Is there some kind of law in Germany that says I must still associate with you and not think ill of you just because you make repugnant or just stupid speeches? If so, score another freedom for the US
School district rules - should the public have no say in the environment that is created, using its tax money, in the place where its children must attend each day by law?
Are you being sarcastic, and pointing out how little freedom the US has?