Thousands of protestors demonstrated in Istanbul on Saturday against a prison sentence imposed on a leading opposition politician. Protestors in the city’s Maltepe district chanted “Rights, law, justice” in Turkish, in a show of support and solidarity for Canan Kaftancıoğlu, a member of the main opposition Republican People’s Party’s (CHP). Turkey’s Supreme Court of Appeal recently upheld a nearly five-year sentence on Kaftancıoğlu, who was found guilty of insulting the president and the Turkish state, based on her Twitter posts from 2012 to 2017. Kaftancıoğlu was also banned from participatin…