Zelensky has banned all opposition parties that were critical of him in any way, claiming they "were all Russians", which looking at a few of the parties banned is clearly a joke.
Zelensky also banned all non-state approved news, forcing all information to be funneled through his one approved network.
This is pretty common in prelude to and during wars. Abraham Lincoln infamously shut down newspapers and arrested journalists and the newspaper's staff.
https://www.presidency.ucsb.edu/documents/executive-order-ar...