An independent Senate candidate in Massachusetts is suing to keep his sign calling Democratic Sen. Elizabeth Warren a “fake Indian” in place.

Shiva Ayyadurai is suing the city of Cambridge after he was told to remove two signs with Warren wearing an Indian headdress, the Washington Times reported.

The signs are placed on both sides of a school bus in front of Ayyadurai’s office and read “Only a real Indian can defeat the fake Indian.” Ayyadurai was born in Mumbai, India.

Read the full article at the Roll Call website.