It's quite common for white people to be offended when the issue of racism is raised in no uncertain terms. The effects of racism are vile and literally kill people of color every day. It's natural for white people who are identified as the group where this vile behavior comes from to feel uncomfortable, and you are no exception. What do you want? Step 'n fetchit subservience in order to avoid being illegally stopped and searched and threatened with death if they don't obey? It's a protest. Of course it's going to ruffle the feathers of white people because it doesn't include them.
How about "Loose association of a subset of the population who are relieved they get home and see all their kids and point out that the largest subset of the population don't receive the same treatment by people who are paid to protect us". I mean they can't offend anybody with that can they?
Are you be offended by that?
Here's an essay on the subject from a writer who is becoming a favorite of mine.
https://www.theroot.com/how-to-protest-without-offending-white-people-1818770022
Five months before the March on Washington, 60 percent of the country had a negative view of the event and 57 percent thought that peaceful sit-ins hurt the civil rights movement. Even a year later, in 1964, 73 percent of Americans believed “Negroes should stop mass demonstrations,” according to Gallup(pdf).
There has never been a movement for the freedom or equality of people of color that has gained white approval. Not the abolitionist movement. Not the anti-lynching movement. Not the Black Power movement. Not the civil rights struggle.
Looking for respectability and approval from white people will always be as fruitless a task as a chicken’s attempt to convince a fox to respect the boundaries of the henhouse.