Many people take the position that the protests carried out by PTI, and PAT do not have an Islamic basis. The article I have linked below gives a very well thought out answer by a leading Islamic Scholar. People who decide to participate in these protests have sound Islamic thinking with them, you have the right to not participate, however, you cannot call their decision unIslamic.
This brings up a related point. In that the protesters were speaking out against the excesses of tyrannical, authoritarian powers, they are engaging in the best Jihad. The Prophet, peace and blessings upon him, mentioned, “The best Jihad is a just word in the face of a tyrannical ruler.” In light of this Hadith, what Islamic argument can validly be made to deny the people their right to speak out against the tyranny of their rulers?