There's a difference between "civil disobedience" and "rioting" against unjust laws. Rosa Parks and Harriet Tubman didn't hurt other people with their actions. The laws they worked against were unjust and had no business existing in the first place.
Violent riots on the other hand....those are completely different. Damaging others property is illegal, as it should be. Rosa Parks didn't burn the bus down, she sat in a seat designated "whites only", and that was all. The problem is, her actions got real results. Harriet Tubman's actions got real results. The Founding Fathers certainly got real results from signing the Declaration of Independence. The time of "civil disobedience" getting real results has passed. Peaceful protests have amounted to nothing. No action from elected officials, no change from the status quo. That's why these protests are turning violent, because there's no answer to a quiet voice, so maybe it needs to be louder. Now I'm not saying burning peoples stores to the ground is the RIGHT answer, certainly not, but all of this could have been avoided if people just listened to the outcry in the first place instead of ignoring it and sweeping it under the rug until the next African American is killed unjustly by those who swore to protect them.