Local resident says notice placed on windshields aim at 'galvanizing the African American community to be against the Jewish community'

About half of those surveyed say US president's actions have made things worse for African Americans, Muslims, Hispanics and women

Democratic lawmaker, recently targeted by Trump, established fellowship that seeks to bridge gaps between black and Jewish communities in his Baltimore district

Message against congresswomen echoes remarks heard by Americans of color, who say strangers -- and now the president -- often try to make them feel as if they don't belong