You know you are describing Zelensky’s Ukraine right there.
Welcome to war. The US and Britain banned pro-Axis politicians and media in WW2.
Ukraine has only banned pro-Russia sources as they are under Russian attack, they haven’t banned simple political opposition.
It’s common knowledge, that a couple of months AFTER Russia invaded Ukraine that the Ukrainain parliament voted to suspend pro Russian parties engaged in anti-Ukrainain activities. Perfectly normal to do so in the middle of a war, not doing it would have been an insult to common sense.
After Al-Qaeda leveled the twin towers do you think Washington would have allowed radical islamic parties to operate in America? Evidently no.
For your knowledge Russia is leveling entire towns in Ukraine and wiping out villages.