Racists on Question Time

From the TES discussion board:

"Surely Neil Lewington, who turned his bedroom into a bomb-making factory, and has been convicted of terrorism and explosive charges would be a far better representative of racism. Why has he been locked up and not invited on question time? I think we should be told."

The same poster also made the point that if you think racists should be allowed to air their views (they have a point of view after all) then would you say the same about paedophiles (they have a point of view after all)?