It [a video by the vaginas of Hizb Ut-Tahrir] features two Muslim women explaining that according to their understanding of Islam, men can discipline their wives by “hitting” them with a small stick or twisted scarf so as not to cause pain.
“It’s very evident that this is symbolic in nature,” one of the women said.
It's not uncommon for Muslim men to beat their wives. Usually the close relatives know about it. They might not approve but they also don't condemn the atrocious behaviour. It's not like anybody else is going to find out -- a plus for the garbage bag attire!