I doubt this is about slander, because that’s not a criminal offense. People don’t get locked up for slander.
This is about him violating political correctness.
From the article:
“It appears that Böhmermann was trying to explain the difference between satire and slander to the Turkish head of state - with his poem very much being an instance of the latter.”
I’m no the one who decided to call this “slander”.
But no, obviously, this does not meet a normal American definition of slander. It’s just a case of peasants saying things the ruling elite doesn’t want them too. The term “political correctness” was originally coined by Stalin and anyone who tries to enforce it is no better than Stalin.
But still, I am interested to know, what sort of things Erdogan may or may not be doing while he is kicking kurds.