As has been pointed out, the assailant is under 18 and therefore under UK law cannot be named. Although his name may well come out at some time, when there is mass outrage, as in the case against those who killed trans girl Brianna, I feel there is a consensus to not shield perpetrators of heinous crimes. I think the police are getting the brunt of anger for what some of the public perceive as historical obfuscation and possible anger that the suspect, for whatever reason was on the police radar and whenever that is stated there is the understandable ponderable, as to "could this have bern averted" Nevertheless there is a cynical misdirection of aggression by agitators. If the boy's family emanate from Rwanda, as reported, then as others have stated that country is overall Christian, so to attack mosques is taking the tragic circumstances of this case to just stir up racial disharmony.