Syag
Rather than denouncing other people, One should improve oneself. You dont win friends and infuence people by denouncing others, However you do win friends and influence people by showing people the beauty of the torah and how loving it is.
A simple example is Zaka, everyone knows there is tension in Israel between Charedim and non-chareim, but almost everyone in Israel respects Zaka.
People dont want to hear negative mudslinging, they want to hear positive messages.
Having a minyan and then telling someone they are not part of it, doesnt have any positive results, only creates resentment