Deliberate mistake: During the final match, Johnny scores his second point with a forearm to Daniel's side. However it is incorrectly announced as a kick to the side. Johnny was on one knee at the time and in no position to kick him. Also, you can see Johnny throw a forearm and not a kick.
Deliberate mistake: I have participated in several amateur karate tournaments over the years and I have yet to see one that is full contact without any protective equipment whatsoever, especially one in which all of the participants are minors. All of the contestants should at a minimum have had mouth guards, gloves and foot pads.
Deliberate mistake: In the beginning where Daniel and his mom finally arrive at the new apartment, pay close attention to the wooden entry fence. Soon after Daniel's mother states, "This is the Garden of Eden," you can see Daniel's soon-to-be friend "Freddy" lining himself up behind the wooden fence prior to Daniel's mom opening the door.