Erdoğan's government has been accused of democratic backsliding and corruption in later years.[4][9][10][11] Starting with the anti-government protests in 2013, his government imposed growing censorship on the press and social media, imposing blocks on sites such as YouTube, Twitter and Wikipedia.[12] This stalled negotiations related to EU membership. A US$100 billion corruption scandal in 2013 led to the arrests of Erdoğan's close allies, and incriminated Erdoğan.[13][14][15] Following a souring in relations with Gülen, Erdoğan proceeded to purge his supporters from judicial, bureaucratic and military positions. A failed military coup d'état attempt in July 2016 resulted in further purges and a state of emergency.