Mass hysteria ignoring Sharia practice (6)
I believe the answer is:
system
'practice' is the definition.
(thesaurus)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for system that I've seen before include "My sets (anag.)" , "Method (for betting?)" , "Method (of betters?)" , "Organised whole made up of related parts" , "Method, set of connected things" .)