I'm not sure how shocking this story really is, given the declining manners I've seen and the increasing "this is my vacation and I'll do whatever I want whenever I want" attitude that seems more prevalent these days. Anyway..
Last year at
MVMCP, we lined up in Frontierland to watch the first parade of the evening. Next to us, along one of the covered-porch storefronts, a woman had set herself and her kids up on the rocking chairs. There was some kind of stuff in front of this area (maybe old prop packing crates or something) which sort of prevented anyone from standing in front of them, so they could basically watch the parade from these chairs. They had obviously staked out this space well in advance of the parade (probably right after they came into the park for the party). They were all happily settled in. Every now and then someone would stop in front of them, and the woman would shoo them off, pointing out that they had saved these seats. I took one look at this setup and figured that this was not going to work out.
Sure enough, about 5 minutes into the parade, Cletus the slack-jawed yokel showed up with all of his kin, and proceeded to climb onto the stage/boxes in front of this seated family. They either didn't notice or didn't care that they were now standing directly in front of this family. Now, the seated woman politely but firmly asks them to please move so they can see the parade. Cletus ignores them. She asks again and again, and then tells them they are being rude. Now it gets ugly - Cletus takes offense and turns around and just starts dropping F-bombs. This is when you get the real disconnect from the Merry Christmas Disney parade going by that everyone is trying to enjoy and this family fued which is ruining everyone else's evening. Mickey should not be viewed while experiencing a fight or flight adrenaline rush.
Pretty soon these people are just shouting obscenities (the family on the porch being the more polite and civilized of the two). Someone goes to get a CM, who finally shows up as the parade has passed through. They were still quarrelling when we left shaking our heads.
Obviously, the jerk who knowingly stands in front of a whole family, after a parade has already begun is the biggest part of the problem in this equation. I hope they threw him out of the park. However, I also think you have to be realistic about where you park yourself for parades, and other events. This was an incident waiting to happen. If you're sitting curbside and someone steps in front of you, then I think you can more than reasonably ask them to take a hike. If you're seated 10 - 15 feet back from the parade route, then you're just asking for a disapoinment and unpleasant confrontation.
Just my humble opinion. Again, not a real shocker, but it did spoil a lot of the enjoyment of the parade for those around it.
Waving from south of you (near Binghamton)!
You just never expect it until that 1st red-faced time the little loves choose to surprise you & everyone else! Yikes! you notice they are all looking at you like your craft just crash landed! 
