"The profanity expressed was directly correlated to language expressed by the Republican candidate for president."

The Republican candidate for president never said anything profane. The comment that enticed all of the knitting was made years before his candidacy, and not for a public audience. We've all said things in private many years ago that we would not repeat today in public. The marchers should protest their rioter friends, who are committing atrocities today. If they must protest past activities, protest their own private comments.