Generally, dissent is a healthy thing and you'll get a better society that way. Once the capability for real dissent is eroded, the social controls of the society will be turned to the benefit of the victorious faction. This turns out poorly for everyone else.
We should not be creating a mass surveillance state. The actual abuses domestically generally of minority populations, abroad, generally of non-NATO civilian populations, and potential domestic abuses (with many well noted assassinations and infiltrations in the past) are alarming and have already stronger, more precise abilities for social control of the population by the state than existed in dictatorships. The Stasi would have killed for the NSA's database and planting live tracking beacons on most citizens.
I'm on the left, but the non-financial political freedoms of the right are a bellwether for my own (though the literally genocidal far right is a more complex discussion). In general this makes a lot of logical sense because conservatives and right wing ideologues wish to maintain the status quo (literally to conserve it) or to return society to a past state (e.g. the relation of men and women, the role of religion, etc.), and range from libertarian to authoritarian, neither of which really threaten established authorities (and often reinforce them) and so are treated with kid gloves (watch how police treat right wingers at protests on average). Blue lives matter is a right wing cri de cœur that's an example of a "protest" that celebrates existing civil authorities.
Liberals and more-so leftists wish to change society into a new state which threatens the established order. Therefore, the civil authorities do not treat them with deference. Typically political freedoms lost by the right are applied with vengeance against the left.
Encourage dissent. We make fun of countries that don't. :)
EDIT: added info on why losses of political freedoms for the right are an especially bad bellwether