They are preaching terrorism full stop, I'm shocked that you still asked for proof and dismissed their killing of army personal because it happened a decade ago. Now I'll ask you who was in charge of that place a decade ago and who is in charge now.
SLAMABAD: The chief cleric of Lal Masjid Maulana Abdul Aziz on Sunday made it clear that he respect Islamic State (IS) because of similarity in their missions and has no repentance over supporting IS.
http://tribune.com.pk/story/806711/no-regret-over-supporting-is-says-lal-masjid-cleric/
There is a reason for that buddy.
Back in the PPP era, when terrorism was at its peak. You remember how fast Madarasas was being taken down and being closed?
I studied in Madarasa in Karachi (I wont mention the name).
In the PPP era, Ayatullas/libdos spread a lot of rumors and propaganda against Madarasas, including the one I studied in.
One of the rumors was that this Madarasa has even a
tank stationed in it, along with machine guns.
There were a lot of official visits by senior ISI officers to this Madarasa and some undercover agents also worked there, to keep an eye on the activities, they obviously could not find anything and so the Madarasa was not closed, no teacher was arrested for preaching terrorism.
In the Madarasas that were found to be doing it, were closed down.
Hence the question, I would be very surprised if the Lal Masjid is not being infiltrated/spied upon and it is hard to imagine that they would spare this one (specially this one) if it was found preaching terrorism, given the military crackdown on terrorism.
As for the cleric, I just dont get why the f*ck is he walking freely. That is a serious question for Pak Army.