That doesn't happen at my church, but I have experienced it elsewhere, much to my displeasure. When I was RC, the local community was split between Anglos and Hispanics, and the two had entirely separate masses since they were both big enough to necessitate their own priests, given linguistic and cultural differences. Since I'm kinda both, I was able to go to either mass (and often went to the Spanish-language mass because it was an hour later in the morning...). I eventually had to stop doing that after the priest at the Spanish mass went on a little diversion (can't really call it a homily) about how "the white people gave $X (big number) this week, but we only gave $X (modest number)...clearly the white people are more serious, more caring, etc." This was, predictably, not at all the message that the Anglos were getting at their services (can you imagine? "You guys are SO MUCH BETTER than the Hispanic people...what better Catholics you are!" Gross), and it bothered me very much to think that a priest would say things like that to his congregation. They didn't single out individuals, but they did at that time publish the totals given at the various masses throughout the week, so...yeah, I don't really understand how anything good can come out of this. It makes good people feel bad about not being able to give more, and shame is not a good motivation for charity.