Turkey's interior minister says authorities have detained 37 people for allegedly sharing “provocative” content on social media following the arrest of Istanbul’s mayor and potential challenger to President Recep Tayyip Erdogan.

Ivan Hansen, a retired Danish police officer, loaded up his basket at the supermarket, carefully checking each product to avoid buying anything made in the United States. The 67-year-old said it's the only way he knows to protest U.S. President Donald Trump's policies.

Detained Istanbul Mayor Ekrem Imamoglu appeared to address Turkish President Tayyip Erdogan in a social media post on Thursday, accusing him of corruption and calling on members of his ruling party and the judiciary to oppose injustice.