Many may not support it, but nearly half do including many elected Republican politicians. This isn't a fringe Trump supporter issue, but a major issue within the Republican party and with American conservatism in general. Maybe the perception of conservatives being censored is just a reflection of the reality that they support using violence to obtain their goals at much, much higher rates than liberals do and are just suffering the consequences of their actions?

https://www.statista.com/chart/23886/capitol-riot-approval/