Rabbi Aron Tendler and a small group of his congregants in Israel for a bar mitzva were a barred from entering the Temple Mount because they did not have ID. Rabbi Tender is claiming discrimination. But the need for ID is very well known. Why didn't Rabbi Tendler's group have any ID?
Tendler, grandson of the famous halachic authority Rabbi Moshe Feinstein, said that he and his congregants did not bring ID or other valuables with them because they had been at the mikveh [ritual bath] and were afraid that while they were immersing themselves their valuables would be left unguarded.
According to Jewish law, it is necessary to purify oneself in a mikveh before entering the Temple Mount.
Also, Tendler felt that it was preferable from a halachic point of view to leave all mundane items outside the Temple Mount out of respect for the holiness of the place.
Of course, the simplest way to solve that problem would be to have one of the group watch the valuables while the others use the mikva, and for the others to watch his belongings while he uses it immediately after. As for the "mundane items," ID – required in Israel and necessary for security reasons – would not fall under the category of "mundane items" Rabbi Tendler claims to be worried about.
So why leave the ID behind? Maybe this. Rabbi Tendler is under a cloud of suspicion. He has been accused by multiple women of sexual abuse and harassment. He resigned from his rabbinical post (effective later this year), in part, it is alleged, because of these allegations. Becoming a hero of sorts to his congregation's base by being 'persecuted' by Israeli security services weeks after Amona may help him regain his post.
For those of you uncertain about the actions of the security service, what they did is called Profiling. It is in large part why Israel is as safe as it is.