I suppose it depends. There are plenty of rich people who do actively seem to care and go out of their way to not only donate to charity, but actively get involved in communities and try to improve things. Very clearly putting themselves out there and not for personal fame and prestige.
The big part you have to focus on is whether the charity is being done for tax write-offs or other personal benefits, such as what you see with most conservative rich people like the Kochs.
Of course, no matter how a rich person uses their money, even if they very clearly are spending massive amounts of it on helping others and improving the lives of those around them, they'll still be considered evil just because they are rich.
It's an interesting paradox. For some people who have a very narrow view on the subject, they will only consider a rich person "good" if they make themselves not rich. Entirely so. Of course, such a no longer rich person wouldn't be able to help others at that point.