The common trend I have seen concerning the protests of the 60's, was an attempt to villify authority.
Just from reading about it of course. I do know that MLK wanted peaceful protests, and there was enough hatred of blacks in the South, that the white police did abuse their roles as LEO's.
MLK, in my opinion, had the most impact in how he did his protests. When MLK led a protest, the protesters did not antagonize or act in any unlawful or violent way.
They did not hurl bottles at the police, they did not masturbate in public (
Occupy Madison loses permit - News - The Daily Cardinal - University of Wisconsin-Madison ), they did not defecate on police cars .... in other words, they did not bait police into confrontations.
When MLK and his marchers were seen on television, being beaten with clubs, and tear gas being dispersed on a "PEACEFUL" demonstration, people were shocked.
Ever since, every cause has tried to mimic what MLK has done. They try to villify the police and claim they are acting peaceful.
Just be careful of the BS.