The overthrow of one class by another is inherently violent. If you aren’t willing to engage in this sort of “authoritarianism” then your revolution is over before it even started. Violence is critical to the suppression of the counterrevolution, or more precisely the threat of violence, ranging from imprisonment to execution. This is needed if you want to be anything other than a paper tiger. Reactionaries won’t graciously accept the inch you give them and submit themselves to your moral victory, they’ll take another mile and curb stomp you.