black mark

The theft of the gun while he was out of the guardhouse will be another black mark.

Allowing this symposium to proceed along the lines laid out in the announcement will be a black mark for Stanford in the scientific community.

Refusals or questioning led to the withdrawal of athletic sponsorship and a black mark against your name in Stasi files.

It was a landmark — and, for Trump’s supporters, a black mark — in American history.

If it met conditions negotiated with the Justice Department until Jan. 7 of this year, Boeing could avoid further sanctions and yet another black mark related to the disaster.