Parents overreacting or behaving badly at youth sporting events has been going on since the advent of youth sports.
I remember when I was walking to the baseball field getting ready to play a game - some East Texas equivalent of Little League. A game had just wrapped up when I saw a mother of a ball player slap her son for, basically in her words... not striking out the last batter he faced to win the game.
My sister-in-law has lots of stories about parents getting out of control stemming from her days as a soccer mom for club teams in the Dallas area. So bad at times they banned the parents from matches.
Then there are the Moms I used to see wearing their kids letter jackets in The Woodlands. WTF. I bring this up to point out how wrapped up parents get into what their kids are doing
My oldest granddaughter is active in club ball and school sports. She played in basketball tournament for her Junior High Team and there was an asshole parent in the stands acting like he was at Rupp Arena when the girls would go to the free throw line. There's that and then watching her play club ball where the whining about the officiating is pretty consistent. I have to distance myself from where the parents(yep, my own family) sit at these games.
Bottom line... Mom's and Dad's, your time for athletic glory days have passed. Sit down and shut up and let the kids play the game. Don't put your failed dreams and expectations on your kids. It is their time. Treat the officials with respect no matter how bad you think they are. Treat the coaches with respect no matter how bad you think they are or how biased they are against your kid. If you think you can do a better job then sign up.
I say this as someone who has been a player, coach and umpire(part of coaching duties).