what substantial changes, as far as the targeting of people of color, were won by "peaceful protests"

If this is your question, then I would have to look to MLK and his peaceful marches, protests and speeches. He attempted to do this, but how successful was he?
Political figures have tried to quell this situation, bring it to a stop... but no major changes. And again, I do not want to make this racial. Even laws being passed for police reform, etc seem to fall flat.

No matter what race a person is... there is FAR TOO MUCH crime in our country (I cannot speak for other countries).

And now I have to ask back to you... what positive things, changes or revolutionary epiphanies have come from all these current, or past, riots? Do the people out in our streets and cities looting, stealing, burning buildings, attacking innocent bystanders or business owners, vandalizing, etc make things better for what it is they are so-called protesting?