Final answer:
In the context of the question, it is not appropriate or legal to support or encourage any form of violence or harmful behavior, such as throwing acid on people. Supporting a sports team should be based on healthy competition and sportsmanship, not violent actions.
Step-by-step explanation:
In the context of the question, it is not appropriate or legal to support or encourage any form of violence or harmful behavior, such as throwing acid on people. Supporting a sports team should be based on healthy competition and sportsmanship, not violent actions. Manchester United and Newcastle are both popular football teams in the UK, with their own fan bases.