The SHOMRIM, (‘guards’ in Hebrew) is a police-trained civilian Jewish community-based citizen patrol group in London. Orthodox Jews who wear badges and uniforms says it wants to help its Muslim neighbours protect their mosques from further arson attacks. The group was started by Jewish New Yorkers angry at lengthy police response times after crimes were reported. The London group was originally established in order to combat anti-Semitic attacks, particularly in the Hampstead Garden Suburb area. I don’t know who initially contacted who, but I doubt it will work out long-term. It is much more likely that members of the Muslim community will take advice, and perhaps after some initial training, form their own protection patrol group.