I have friends and family who protested (peacefully) on the streets of Istanbul, Izmir and Ankara in the last few days. Almost all of them had to endure tear gas, beatings and other cruel events.
I have also been told by the exact same people (who don't belong to any political party btw) that people who normally wouldn't stay in a room together (think soccer fans of opposing teams, religious and non-religious people, nationalists and communists) went onto the streets to protest against the police brutality, SIDE BY SIDE.
You are right, Erdogan and his party won the last three elections. But there are also rumours that they bought votes, so like you said - don't believe everything you read.
The problem is way bigger than a few political parties trying to pull strings (honestly your opinion sounds very pro-government and almost conspiracy theoretical): There are people RIGHT NOW in the streets getting BEAT UP by the police (the very same organization that should PROTECT those people).
Look around on twitter and facebook, read posts of REAL PEOPLE. The police brutatlity has taken a level which is inhumane and has to be stopped.
Edit: (sorry I'm getting a little angry here) Posts like yours are exactly the reason why people look at this and think "oh this is just another political party power move / somebody trying to exploit the situation. This is probably all fake anyway" - while people are getting beat up.