undesirables

US /ˌʌn.dɪˈzaɪr.ə.bəlz/
UK /ˌʌn.dɪˈzaɪr.ə.bəlz/
1.

Unerwünschte

people whose behavior or appearance makes them unacceptable in society or at a particular occasion:

:
•
There are guards at the door to keep out (the) undesirables.
:
undesirable