Such a person is a hothead or bruiser or has a chip on his/her shoulder, any person on the right side or left side.

According to your Vocabulary. What

is a hothead? Why does a hothead make a protest violent?

^{Source: www.vocabulary.org. According}

to CollinsDictionary.com/dictionary/oyender/hothead.COM. A

bruiser is someone who is heavy and aggressive, and enjoys a fight.

^{Source: https://www.collinsdictionary.org. British}

dictionary.com/gr/english/bruiser.html. Posted here by: bruiser.com.