Like other strongmen, President Erdogan happily scapegoats marginalized people.
Turkey's attempt to censor the series sets a "frightening" precedent, the show's creator said.
The city of Ankara has halted all LGBT festivals, claiming events could "provoke hatred and hostility."
Police arrived with water cannons and chased protesters out of the streets.
Activists in Istanbul planned to hold the Pride march this weekend, but police fired rubber bullets and tear gas, and detained several people.