Two Native Americans removed from San Francisco's AT&T Park during a Native American Heritage Night at a Giants game in June are filing a claim of police brutality against the city and are urging the Giants to practice cultural sensitivity.Kimball Bighorse, 35, of San Bruno, who is of Seneca, Cayuga, and Navajo descent, stood outside AT&T Park this morning recounting the incident that occurred inside the ballpark on June 23 that led to police detaining him and a fellow Giants fan who he met that night, April Negrette. Giants Consider Ban on "Culturally Insensitive" Clothing Bighorse said he and Negrette peacefully confronted a man wearing a backwards, plastic Native American-themed headdress.Bighorse described the headdress as "counterfeit" and said it was being worn in an "offensive" manner on a night that was meant to celebrate Native American heritage. Ward Hopes to Learn From Rough Night They expressed to the man that what he was doing was an insult and a highly offensive instance of cultural appropriation.In a video about the incident posted on the YouTube channel WeCopwatch, Negrette says the man eventually gave the pair the headdress...