KIEV, Ukraine — A prominent Ukrainian civic activist and journalist was brutally beaten outside Kiev Wednesday, the latest in a string of attacks on activists and opposition members amid weeks of protests calling for the ouster of President Viktor Yanukovych and his Cabinet.

Hundreds of journalists and opposition activists gathered outside the Interior Ministry headquarters in Kiev on Wednesday, demanding the resignation of Interior Minister Vitali Zakharchenko after the attack on Tetyana Chernovil. Chernovil has been one of the leaders of mass demonstrations that have rocked the Ukrainian capital for more than a month since Yanukovych decided to scrap a deal with the EU in favor of forging stronger ties with Russia.