Speaking the truth in love. 1 Peter 3:15 Christians are to defend their faith, but to do so with gentleness and respect. Colossians 4:6 Let your conversation be always full of grace, seasoned with salt. Sadly, some Christians fail to follow these biblical instructions. Some Christians (or at least people who claim to be Christians) speak the truth, but speak it in such a way that it is very hateful. The Bible does not support such method.
To tell someone the truth is an act of love, not hate.
Declaring that certain groups are making some serious theological and biblical errors is not hateful as long as the declaration and speaking the truth is presented respectfully.
A Christian should never participate in speech that is intended to insult, intimidate, or cause prejudice against a person or people based on their race, gender, age, sexual orientation, political affiliation, occupation, disability, or physical appearance.