The Arsenal manager was left less than impressed by Saturday's reaction from a section of the travelling support.
"Frankly, that is atrocious," said Wenger. "They will not be remembered for the quality of their taste with that kind of remark.
"I just thought 'That is low' and put it in the ranks of stupidity.
"One starts to say something stupid, everybody follows, even intelligent people.
"People lose their identity together and their sense of responsibility."