Why would you want a bar council sticker, friend? It won't help much.
When police see Bar Council sticker or badge, they'll just be more careful but they're not scared.. they will just think that "aiyah, lawyers sure talk a lot la"
If you can get your hands on JALSOA stickers and badges, that's another story! JALSOA = Judicial and Legal Services Officers Association. It's for government's lawyers, including prosecution lawyers (DPPs) and ACA officers.
If you have that one, police will be more intimidated... because police officers, including chief inspector, have to refer to any JALSOA officer as "Tuan" or "Puan"... totally different level..