to uphold justice; to be loyal (to one's friends); to stick by

to rely on power

to rely on; to depend on

battle

to back sb up; to support (from the rear)

to speak out for justice (idiom); to take a stand on a matter of principle

to help the needy for justice (idiom); to be loyal to one's friends and generous to the needy

to take advantage of one's position to bully people (idiom); to kick people around