When agents are coming to your house after a protest (how did they even find your identity?) to ask questions then I'd say it's fair to call it that. Remember, we've lived under a surveillance state since Bush and 9/11; a police state is a logical step once an authoritarian comes into power.
> No one is being questioned for speech alone, only when it relates to a possible crime
And the "possible crime" is what here? If he was being interrogated for a possible crime, he wouldn't be free to leave and they would need to read him his rights.