fringestream
When a political ideology that should still be on the fringe of civilized society for its extreme views drifts into the mainstream because people in certain positions of power lack their own ideas, those fringe ideas move into the mainstream of one political party, creating a fringestream.
Asking the newly-elected president to provide multiple copies of his birth certificate, college transcripts, a rundown of everyone he's ever met, a blood sample, a polygraph, and a note from his mother would be dismissed without prejudice if the president in question were white. However, since President Obama is our country's first black president, Birtherism has become fringestream.