At first a handful
‘CCP’ - 
‘illegal alien’ or some variation of it -
‘Death to Arabs’ (edit: it’s not a shibboleth but Israelis can really go fuck themselves) -
‘suicidal empathy’ (popularized by the likes of Gad Saad) -
'purity tests - oh yeah? here’s a pell grant tests a la Kamala
will add more if I feel like it
Fine, it’s not a shooting offense, in real life, it’s prolly forgivable, if I explain it.
Online… I’d be less charitable.
I have absolutely heard people use “CCP” while talking about the achievements of the CPC and how great China is.