One of Germany’s best known satirists, Jan Böhmermann, has failed in an attempt to have the country’s Constitutional Court rule on his legal spat with Turkish President Recep Tayyip Erdogan. A poem recited on public television by Böhmermann in 2016 linked Erdogan, among other things, to sex with animals and led to a diplomatic spat between Germany and Turkey. Erdogan took the case to the German courts under a now removed law regarding insults to heads of state. The case became a battle over constitutionally protected freedom of expression on the one hand and personal rights on the other, as we…