Look, these are nice boys OK? They all go to their local Mosque every week, they read their Korans, and they work hard to try to integrate into life in their adopted country.
Sadly they did all plot to kill people, but they didn't mean to actually carry it out. No, they were doing it for research purposes only, so they could warn others about the dangers of crime.
Unfortunately the stupid legal system saw things differently and sentenced them to prison.
Whilst inside they killed no-one, nor did they plot to destroy any London buildings. In fact they were perfect inmates, and really deserved to be let out much earlier than expected; especially after promising to be very good boys in future. Their causes were rightly championed by some important 'prison reform' Labour MP's.
So, along with another 200 or so like-minded thinkers, they are now all happily back at home with their families (except for a couple who still had important projects to finish), and are all following their hobbies like knitting, pottery, cake-baking, and weaving; I hear that one is even about to establish a rescue centre for kittens. They are once again perfect citizens, and if any racist killjoy says anything different; don't take any notice.
To serve a quarter of one's sentence is plenty; in fact I would suggest far less. They are all now reformed characters..... I know because they told us so.
Mr Corbyn agrees with me. He said recently "Letting them free is the correct thing to do if they have been rehabilitated (which of course they have), but they must serve some of their sentence".
I mean; you can tell they're nice boys just by looking at them.
p.s. It must be said that Usman Khan (the nasty bastard missing from the above photos) must have forgotten that (in Corbyn's words) he had been 'rehabilitated'.