Some people aren't yet in a place to understand this perspective. Others have been hurt by Christians who failed to live their faith or were otherwise misguided in their actions or teachings. Some slander the faith based on ignorance or misunderstanding.
We're called to forgive our enemies and respond with patience, humility, and compassion. I've found that doing this without losing sight of God's commandments is a struggle that requires daily prayer and reflection.
Have a good weekend, and peace be with you.