Recently I was studying the Beatitudes in context of the Sermon on the Mount, Jesus' Kingdom Manifesto.
It helped me when I put it in my own words.
You're blessed when others mock you, hassle you and gossip about you because of your association with me.
Be joyful of the fact, because you'll have an amazing reward awaiting for you.
This isn't new – people have harassed the prophets like this in the past.