I've already said this. It's very easy to find in the legislation I linked, it's literally in the first paragraph. I don't know which provision the judge applied because I wasn't in the court obviously but quite clearly it is the one regarding the potential to reoffend and this one is very easy to argue.
It doesn't take a rocket scientist to work out that these protesters were highly likely to do something again because the whole point of Palestinian Action is serial criminal resistance. It is very likely that they'd get released and go out to reoffend because again they're a protest group whose sole purpose is to protest through criminal action.
Why don't you consider what they actually did and who they are first, maybe then you can put yourself in the judges shoes and understand why bail wasn't granted? It isn't about attacking them for their protest, it's about applying the law to protect victims from their crimes. One victim that you're failing to protect supposedly suffered a fractured spine!