Brazilians are a separate racial group?
Line-cutting is wrong, and it shouldn't be tolerated, whatever "race" or ethnic origin is doing it. Culture, rightly or wrongly, causes stereotypes. The Brazilian groups have never bothered me personally, but so many people observing such behavior can't be all racists or all wrong. Certain cultures are known to dress more formally. Others are pickier eaters. Some would never dream of splitting up the family to explore in smaller groups. Some, like the Brazilian tour groups, have been reported time and time again to be obnoxious. It's not "racist" to observe this.
I theorize that this behavior may be the result of wimpy adults being willing to tolerate such chaos, or a sense of rowdy entitlement from those teenagers whose families are wealthy enough to afford this trip. I don't care why, but it is a concern that Disney seems unable to take charge of in this situation, whether it's Brazilians, Italians, Japanese, or North Dakotans. It's not racist, or harmful stereotyping, UNLESS Brazilian groups are automatically treated differently. Then, there's a problem, but observing such behavior is NOT racism. Please, don't be so quick in playing the "Racist" reflex.
Otherwise, thank you for being bold in stopping the line-cutting where Disney seems powerless to act. Vigilante line-cutting-stoppers are a valuable asset.