Yes - it's a concern. But issues exist in both camps.
While the symbolism may indeed point to some level of fascist involvement, couldn't it just as likely be ignorance or coincidence?
Remember the when a UK shoe manufacturer introduced a sneaker/trainer called "Zyklon"? Also, Americans tend to be pretty callous about Nazi-references. I was rather shocked when I attended a summer camp in the US and they sang a campfire songs in different mock-accents while using gestures. You guessed it: with the German accent the heels came together, a Nazi salute was given with one hand and with the other hand a fake Hitler-mustache was formed.
Even today it is not uncommon in the workplace to hear somebody being called the "office Nazi" - usually referring to a person who goes by the book. When I asked why they thought "office Nazi" was acceptable but "office klucker" was not they didn't quite get the point.
When a recent political campaign employed overt Communist symbolism/verbiage and many supporters sported T-shirts and flags with the likeness off Che Guevara the media were silent.
Some of the more prominent forces in the current protests are openly advocating for Communist ideas (based on Lenin, Marx, and Mao), the demise of the nuclear family, the marginalization of fathers, and segregated communities based on "race". You'd be hard-pressed to find any reports about this in the media. I also found it puzzling that one of the prominent speakers at George Floyd's funeral has openly made antisemitic remarks.
The (Democrat) governor of Virginia apparently had his picture taken years ago while either dressed up as a "black man" or as a KKK-member. He has admitted that he is in the picture, but he can't remember whether he dressed up as the former or the latter... The current Democrat presidential candidate made some rather disparaging racist remarks when he ran back in 2012.
While I do believe that a possible effort from the official Trump-camp to reach out to fascist groups should be examined, it would be prudent to extend the same level of scrutiny to all parties.
What troubles me is that both sides are quick to point out how terrible the other side is - and that they're both right.
It's a mess. I'm not optimistic that it will improve.
To boot, John Adams (one of the Founding Fathers, first Vice President and second President of the US) stated that the US Constitution is "wholly inadequate" to govern what the US have become since it was written for a "righteous and moral people". To be sure, I believe that re-writing the Constitution in today's climate would be far worse than keeping the current one, but Adams' statement does explain part of the problems we're facing.