I read this (to me) strange article in the Washington Post saying a German comedian would go on trial in Germany for mocking the Turkish president.
It appears from the article that it's this whole politicized case with various German and Turkish politicians taking an interest. However, the case obviously still has to pass through regular legal avenues in Germany, with a trial, etc.
Under which exact German laws could this comedian plausibly be tried and convicted?
To clarify: I'm surprised that this is even a case. I thought the only exceptions to free speech in Germany were outright racial/sociological hate-speech and Holocaust-related topics. I am looking for an elaboration on how it's legally possible in Germany to put someone on trial for mocking a political leader (something that's often celebrated in democracies with freedom of speech.)
Was this a serious case of libel or slander?