People can get hurt or killed. People may be breaking the law by engaging in violence. People can make their point without resorting to violence. Violence can often undermine a protest as the protesters will be accused of being bad people and so their protest is not valid. It gives those they are protesting against something to use against the protesters. So for these and other reasons there should not be violence at protests.
non violence...
He did abandon non-violent protest as it was not working out
In some sports it is not only acceptable it is required.
No.
with your soul not with physical violence
Gandhi is famous for leading peaceful protest. he never used violence against violence
A peaceful protest is simply a demonstration of a belief without violence. Picketing is one of the most common, as is a petition.
Violence is mainly unacceptable unless there is a special case like when someone is violent to you.
Jesus is seen as a martyr because he willingly sacrificed himself for his beliefs, specifically his teachings about love and forgiveness. He faced persecution and ultimately death because of his refusal to renounce his message, which has led many to view him as a martyr for his faith.
riot
malcolm x
Basque separatists