This, IMHO, is PRECISELY the proper approach to foreign and domestic terrorists alike. Banning free speech that stops short of promoting or soliciting violence is both needless and wrong, because speech that DOES exhort violence can and should be prosecuted for violence. Summoning conferences or rallies where attendees are urged to physically assault, let alone kill, others, or publicly or privately promoting such practices, strikes me as conspiring to murder irrespective of partisan or any other extraneous ideology. Conversely, even the ugliest ideology committed to non-violent action within the legal political process merits free speech protection.

Now, whether the Greek government is sincerely and truly operating on those principles or simply paying lip service to them as excuse remains to be seen.