I have never been a "victim" of rude behavior, but was witness to an ugly exchange prior to the MSEP (has anyone else ever noticed that parades seem to bring out the worst in many people?).
We staked out our spot an hour or so before the parade started and ended up next a viewing area reserved for disabled (facing the garage where the floats come out to start the parade). When we arrived there was an empty wheelchair placed in this area (you can probably guess where this is going) and as the area filled up, the empty chair was eventually moved behind the people taking their place to watch the parade.
About five minutes before the parade started a family of five or six walked up to where the empty chair had been left and a couple of them were carrying a disabled boy who was probably around 10 years old. They had dropped off the chair and gone to eat dinner, expecting that the boy and the rest of the family would have a place waiting for them in the area reserved for wheelchairs. The family kind of "ganged up" on a guy in wheelchair who was in the actual spot where the chair had been left but wasn't the one who had moved the chair.
After many unkind things had been said, a number of able bodied people made room for an additional chair and cooler heads eventually prevailed, but only after a couple tense mintues.
Yikes!