Do it! What better chance to "plant some seeds" !!
"Brothers and sisters, we need to challenge the train of thought we have been holding on to." Read about the Boreans .... Ask: Are you behaving the way you do because you see your brothers and sisters behaving that way or are you following the example Jesus Christ set?
"So what has your attitude been? Has it been one of love and concern for your brothers? Or judging and condescending?"
Then talk about the love of Jesus. Talk about how Jesus broke rules in order to show love like how he broke the Sabbath to save an animals life.
Focus on how we should be more concerned about caring for our brothers and sisters and less about trying to condemn them. There are loads of scriptures for that!