Yesterday, I saw a HS game where the attacker (White), in the box tried to beat 2 defenders (Green) and in the process lost the ball. This Varsity player successfully defeated a shoulder charge and potential trip and eventually the player feigned a trip with both feet together, leaped in the air, chest out and arms back in some sort of swim/diving form and tumbled to the ground (no call as the previous contact was acceptable and the final contact was a clean tackle and obvious feign). His team's sideline went ballistic. Thereafter, the Green team is moving up field and the White defender moves in for a tackle, misses, trips over the Green teams leg and goes flying through the air (no call, potential foul by White, but advantage), White's sideline erupts in disbelief apparently believing that anytime one of their players gets air its a foul and the sideline becomes even louder, then a White defender in a last ditch effort to stop the attack knocks the Green attacker off the ball with a massive shoulder charge from behind sending the Green attacker to the ground (whistle - foul).
What the White sideline saw was two incompetent referees allowing their players to get fouled and fly all over the field and then when their player uses physical contact, the referee crew was clearly biased against them by calling a foul for similar behavior.
What I saw (an experienced referee) was a good job of non-calls by the referee team (2 man system) and some physical play indicative of higher level boys varsity soccer. I also saw a uneducated sideline that was viewing the game through seriously biased glasses.