“Blessed are ye, when men shall revile you, and persecute you, and shall say all manner of evil against you falsely, for my sake.” Matthew 5:11
“Yet if any man suffer as a Christian, let him not be ashamed; but let him glorify God on this behalf.” 1 Peter 4:16
That church gathering, and any such gathering that is harassed by a mob of protesters needs to congregate at the door of their building right along with the protesters and...pray aloud for them, sing appropriate hymns before them, and read appropriate passages of scripture to them all done in decency and order.
Usually, Christians have to “go ye into all the world and preach the gospel...” Now, it seems, the whole world may be coming to Christians.