Hah, neither of you actually read the article posted.
First line: "Residents get 6 votes each in suburban NY election." Not that only Hispanic residents get six votes each, but that every voter gets six votes, black, white, purple or otherwise.
On the system itself: If half the town is Hispanic and there has never been a Hispanic elected, it may have something to do with shitty candidates rather than the voting system. But there is nothing unfair about giving everybody six votes, it is just a little weird.