That's the way they do their politics, nothing new but that doesn't mean they don't have popular support. They always get their votes on ethnicity doesn't matter whether they deliver or not. In 2008 elections everyone who was aligned with Musharraf got defeated except MQM. You see, one model town incident become a pain for NS while MQM got more votes even after 12 may massacre.
12th may and 17 june are different in nature, on 12th may state was not involved through police but in model town they used Police and was visible for whole nation live, u have right to disagree but i myself did the survey in Karachi in 2012 March and as expected opionion was totally in favour of PTI, so i came back and told my friends and family in europe or States that if 2013 election will not be rigged then PTI will show massive victory