We know. but where do you draw the line between free speech and hate speech, then?
Or are you saying it's all free speech and hate speech isn't a thing?
Hate speech is always directed to a person or a group of persons.
If it is directed towards their beliefs, then it is not hate speech.
Still, public persons have much less protection here.
You are allowed to criticize or ridicule the behaviour of person,
but in some countries you are not allowed to slander persons,
unless it is in public interest, even if its true.
Hanging a doll resembling Erdogan upside down is basically referring to the execution of Mussolini and sends a message: ”You, Erdogan is a fascist. This is what happened to one of your predecessors”.
It is not a direct threat, more a prediction that Turkey might dispose of him in a violent way.
A demonstration with a sign saying ”Hang Erdogan” would be hate speech in my opinion.