It's not the same as making a "fake steve jobs" twitter account where everybody knows you're not really steve jobs. They actually claim to be subversive workers within the agency.
First, let's dispel the absurdity that "ICE official with a critical Twitter account" == "impersonate a law enforcement officer/agency".
There's no impersonation. Everybody knows that @ALT_* is not an official channel. The entire account namespace was created specifically as a protest mechanism.
Government's claims regarding IMPERSONATION are baseless as a pure and simple matter of fact.
> They actually claim to be subversive workers within the agency.
Could the federal government have cause to fire these employees for their political speech? Perhaps.
Should we, the people, grant the government have right to infringe upon private company's property rights in order to settle petty shop politics? NO.
Government can be as petty an employer as it wants. But this ISN'T impersonation, and we SHOULDN'T sacrifice OUR liberties and property rights for the sake of fucking petty shop politics.
If law enforcement wants to track down and fire people who disagree with the chief executive, they're free to waste my tax dollars doing so. But unless they can show substantive evidence of ACTUAL impersonation, they can conduct their witch hunt without barging into our homes and offices.