The 'gloryfying terrorism' clause is a pretty pathetic piece of legislation. One of those things that sounds fine in theory and runs into problems when you try to write it as a law. As it's written currently, it would make it illegal, for example, for me to advocate that the North Korean people should overthrow their government. I'm not sure it will pass the House of Lords intact in any case.
Note that you are not in North Korea, and that people aren't blowing up North Koreans, and that you are not a member of a group with a significant historical record of targeting innocents with terror attacks, including murdering thousands in hundreds of separate attacks.
Change it and make it law. Be clear what behaviour is accepted and what is not.
It is time to accept Muslims for what they are, until they demonstrate otherwise. It is an incorrect assumption to believe they share our values.
It's difficult to write such law without encroaching on freedom of speech. Point taken. It is disturbing though to hear them openly threaten us all and glorify murderers.