This is a great example of how not to act as a hockey parent...
"Parents can take the fun out of hockey by continually yelling or screaming from the stands. Parents should enjoy the game and applaud good plays. The stands are not a place from which parents should try to personally coach their kids. Kids often mirror the actions of their parents; if they see mom or dad losing their cool in the stands, they'll probably do the same on the ice." - USA Hockey
For more information on how to POSITIVELY impact your child's hockey experience, check out USA Hockey's Parent's Community