Members of the Church of Jesus Christ of Latter-day Saints believe in both judgement AND grace. Not just judgement and not just grace. Judgement is to be used as a tool for improvement, not for hate. If it is being used for hate, it is being used incorrectly.
Just as one can assess one's physical condition and deem it in need of improvement, Christianity urges that one do the same with one's soul. To hate one's or another's body is to harm oneself or others, just as it is harmful to hate oneself or a person because of their sins. We seek to improve it, not hate it.
We can believe in right actions and wrong actions and still love. To follow Christ requires us to do both of those things, and to leave any of it out is to cease to be a follower of Christ. We can see sin in the actions of ourselves and those around us, but it does not equate to hate.
Just as a parent will correct a child in order to help them learn what they need to in order to mature responsibly, our Heavenly Father has given us guidelines and corrections so that we can become who we are meant to be.