my interpretation, at least:

the trap is the government (the US’ in this example, perhaps) promising freedom of speech/unlawful search and seizure; but then terrorizing and inflicting violence upon those whose opinions they disagree with, but much more regularly and openly.

Those trapped think they are protected from such retaliation because they have ignored/permitted/trivialized the systemic violence against marginalized groups that has been prevalent for centuries. They ignore the signs of their country’s propensity for fascism, and its intentional increase of brazenly hateful rhetoric and policies.

But they are by no means exempt, and many won’t realize that until it’s too late.