After the annexation, on 16 May the new Russian authorities of Crimea issued a ban on the annual commemorations of the anniversary of the Deportation of the Crimean Tatars by Stalin in 1944, citing "possibility of provocation by extremists" as a reason. Previously, when Crimea was controlled by Ukraine, these commemorations had taken place every year. The pro-Russian Crimean authorities also banned Mustafa Dzhemilev, a human rights activist, Soviet dissident, member of the Ukrainian parliament, and former Chairman of the Mejlis of the Crimean Tatars from entering Crimea. Additionally, Mejlis reported, that officers of Russia's Federal Security Service (FSB) raided Tatar homes in the same week, on the pretense of "suspicion of terrorist activity". The Tatar community eventually did hold commemorative rallies in defiance of the ban. In response Russian authorities flew helicopters over the rallies in an attempt to disrupt them.&lt;section end=HumanRights /&gt;