From Chabad.info so you know it’s true:
On the night of Kinus Hashluchim, Rosh Chodesh Kislev, 5767, a unprovoked violent pogrom was perpetrated in Lubavitch World headquarters – 770 Eastern Parkway. The violence, which was publicized on many media outlets, both Jewish and not, brought tremendous shame to the name of Lubavitch. However the violence wasn’t initiated by Cossacks or Russian peasants of olde, but rather by a group chassidei chabad who couldn’t handle the fact that the parties running the operations in 770 (which were elected by the community of Crown Heights) are individuals who believe the Lubavitcher Rebbe is Moshiach and feel a need to publicize this message, as the Rebbe had encouraged.
On that fateful night, Shluchim and Temimim represented by the Krinsky – Shemtov duo, with the assistance of a notorious gang known to many as "Shomrim" violently tore down signs bearing the words "Yechi Adoneinu" from the walls of 770, vandalized thousands of dollars of equipment belonging to 770live, and beat and assaulted anyone who attempted to protest their actions, including nearly killing Y.Y. Kupchik.
Following the vandalism, NYPD detectives arrested several Temimim who were identified by Shomrim members as having violently assaulted them (when in fact, the exact opposite was true).
Charges against the Temimim were dropped soon thereafter due to lack of evidence, with the exception of one Tomim, Melech Thaler, who was arrested following a complaint by Levi Weiss, (a prominent Shomrim-gang member).
Later on in court, Melech found that Levi Weiss’ charges disappeared and were replaced by allegations emanating from Israel Shemtov, who claimed he saw Melech Thaler throw a bottle at him in 770.
