All frum Jews know the halacha in Shulchan Aruch, that when there is a bris in shul, all minyonim of that shul omit the Tachnun prayer!
The Romanian Satmar gypsies, however, decided to issue a proclamation that on the 5th of Iyur, which is always Yom Hatzmot, one must say Tachnun even if the "baal bris, or the sandik, or the mohel" davens in that minyan! The proclamation clearly states that this ruling was issued by none other than R" Yoel Teitelbaum z"l the founder of the anti-Jewish movement!
So there you have it..... the spiritual leader of thousands urging his sheep to violate a halacha in Shulcha Aruch!
No wonder thousands of Satmar Chassidim have now gone off the derech; if one can violate one precept of the Shulchan Aruch with the blessing of the spiritual leader, who says that one needs to follow any halacha in Shulchan Aruch?