Lots of people. Does the general population need to worry about any of them?

It's like a game of rock-paper-scissors, but all the teams playing are secretly being supported by the other teams in the background. The government employs hunters to do their work for them because if they mess up, it's easy to dispose of them. I've also heard some of the criminal groups get support from government officials. It's a real mess.

It doesn't. It's all the civilians that get caught up in the middle too.