Standard one wants to outlaw? (6)
I believe the answer is:
banner
This clue is a double definition.
'standard' is the first definition.
(I know that standard can be written as banner)
'one wants to outlaw?' is the second definition.
(someone who bans things)
(Other definitions for banner that I've seen before include "Kind of flag - sounds like censor" , "Knight's standard" , "Streamer, flag" , "One prohibiting - flag" , "Standard; heading" .)