Arutz 7 is reporting that Rabbi Amnon Yitzhak was speaking Monday night in Emmanuel, a West Bank haredi town.
As he spoke, opponents began playing music – presumably music Yitzhak had previously banned.
His followers responded by spraying what Arutz 7 calls "tear gas" at the opponents.
According to Arutz 7, Rabbi Yitzhak stopped his lecture and left because of the riot.
[Hat Tip: Michelle.]