After the regime fell, the leader was executed and the prinicipal party members were denaturalized and deported.
To make less natural; to cause to deviate from its nature.
1886, Thomas Hardy, The Mayor of Casterbridge
Henchard was, by original make, the last man to act stealthily, for good or for evil. But the solicitus timor of his love — the dependence upon Elizabeth's love into which he had declined (or, in another sense, to which he had advanced) — denaturalized him.