Liberals hate Mormons because they are generally conservative - but don't seem to hate Mormons any more than they hate people from the South, Texas, or really any evangelical or non-denominational Christian that votes conservative for social reasons.

Conservatives hate Mormons for theological reasons - e.g. protesters at conference, Godmakers, telling their kids that they can't play with neighbor Mormon kids, etc.

Both are obviously general classifications, and not everyone hates Mormons, but for those that do, those seem to be the two fields of hatred - for the most part.