There is nothing weird or abnormal about people pushing their own agenda. Its normal and happens all the time. You won't find a manager who hasn't experienced it.

The new dimension these days is how many people you can rally to your cause and how fast you can do it. Social media and news media amplification gives anyone that power. It can be used and misused and managers are learning how to deal. It's all new so expect good and bad outcomes.

But don't expect people to stop pushing their agendas.