1. Propaganda: in Russia, the media is very tightly controlled by the Kremlin. This is not the case in the US and most Western countries. Russia can use propaganda easily, and it is in their interest. The stories come out of their media are suspiciously different from any other stories from anywhere else. Simplest explanation: they are using propaganda, or at least coloring stories for their benefit.

2. The Ukrainian government is a joke. It was a joke when Yanukovych was in power too. It will continue being a joke until Ukraine is left alone to figure its shit out. You cannot expect a country that's been independent for under 25 years to do things perfectly. For a great example of countries that are democratic, yet get stuff wrong all the time see most Western countries.

3. The Ukrainian government did not cause all of this. Putin has a motive to invade Ukraine (rebulding USSR as his legacy) and an opportunity: currently nobody will oppose him and he has the upper hand militarily. Do you think he is so easily offended that something the Ukrainian government said will cause him to do something like this?