This is usually to make a display of "solidarity", an important word in the lexicon of offenditarians.
There is a strict hierarchy of human value, with handicapable African American lesbian female gendered womyn taking the top spot, and white cysgendered males being "worth" only 1/16th of the former.
The irony of offenditarianism is that if one becomes offended on behalf of someone higher on the value scale, the person higher up can use that to then become offended by the "patronizing," "colonialist" mindset of the offenditarian.
"The driver is wearing all white, a trademark outfit of early 20th Century eugenicists."
"Is the ice cream man a eugenicist?"
"No, but the girl is afraid someone might think he is, she is an offenditarian."