Re: barelvis
This is a sure ground for intra sectarian strife. In my limited understanding,
These are two totally different groups, each considering itself to be the best and true followers of the Prophet Mohammed (PBUH). Both trace their origin ( the Brelvis in particular) to the pre-partition subcontinent and from the areas now located in India.
Brelvis are Ahle Sunnat where as are Deobandis are Ahle Hadith, which is considered a puritan strand of Islam.
Sufism, spiritualism, visiting the graves of the deceased, their mentors in particular and saints etc are the main characteristic of the former ( a Bidaah and and innovation according to the Deo bandia) where as the latter are Wahabis.
Sunni Tehrik, Dawate Islami and Jamatae Ahle Sunat are some of the groups/political parties belonging to the Brelvi sect.
The 80's was a time period when we saw a proliferation of Deobandi-Wahabi madaris in Pakistan and since then the number of their adherents have increased.
Harkataul Mujahideen, Markaze Dawa Al Irshad and Lashkare Toiba are all Deobandi-Wahabi-Ahle Hadith.
As for Tabligi Jamaat, I believe it is also Wahabi-Deobandi in character but they are more peaceful in nature and believe in subtly doing their work, emphasis being on proselytisation and preaching.
more later....