This is an idiom that means when wicked people gain power or start to rule. Alternate translation: "When wicked people rise to power" (See: [[rc://en/ta/man/translate/figs-idiom]])
This is an exaggeration for doing everything they can to avoid having wicked people harm them. Alternate translation: "people go into hiding" (See: [[rc://en/ta/man/translate/figs-hyperbole]] and [[rc://en/ta/man/translate/figs-rpronouns]])