Quite common among career anti racist types.
Here is another example.
https://www-dailymail-co-uk.cdn.ampproject.org/v/s/www.dailymail.co.uk/news/article-8503491/amp/Oregon-politician-confesses-penning-racist-letter-says-spiraled-control.html?amp_js_v=a6&_gsa=1&usqp=mq331AQHKAFQArABIA==#aoh=16173794603216&referrer=https://www.google.com&_tf=From %1$s&share=https://www.dailymail.co.uk/news/article-8503491/Oregon-politician-confesses-penning-racist-letter-says-spiraled-control.html
They probably can't find enough genuine racism so they manufacture some.
Its a tactic to claim persecution in order to justify the suppression of your political opponents.
So you search the internet to find one example, then make the claim "it's common"
Let's be clear: you've proved nothing, other than showing how conspiracies are started