usurpation

US /ˌjuː.sɝːˈpeɪ.ʃən/
UK /ˌjuː.sɝːˈpeɪ.ʃən/
1.

widerrechtliche Übernahme

the act of taking control of something without having the right to, especially of a position of power:

:
his unlawful usurpation of power