Sorry but "opposed to the Israeli state" is not the same as "opposed to the policy of the current Israeli government".

Is being opposed to the United Kingdom a crime? If your idea of being opposed to it comes from a school of thought that suggests putting bombs in train stations is acceptable, and a close connection can be shown between you and other you accociate with (who have committed terrorist acts in the UK)... what happens when your seen with a number of black bags at Euston station?

Hmm... things aren't so different here. And if the problem is over, can someone please get them to put the rubbish bins back in the stations!