To dismiss any expression of solidarity, anti-racism, objection to misogyny etc as "virtue-signalling".
Vermin-signalling is
simultaneously an attempt to discredit the views - most likely in favour of a minority group - that are being expressed, while underlining the dominance of the "correct" group, and an efficient method of establishing that you hold utterly verminous views that will probably mean your family slowly stop
talking to you on Facebook or even coming round for
Thanksgiving.
"My uncle's all over Facebook again, shouting about how people who object to
black people being killed in their own homes are 'virtue-signalling'. He always starts vermin-signalling when he's drunk, but that just keeps getting earlier
in the day."