Brutes strike with violence in Australian uprising (7)
I believe the answer is:
animals
'brutes' is the definition.
('animal' can be a synonym of 'brute')
'strike with violence in australian uprising' is the wordplay.
'strike with violence' becomes 'slam' (I can't explain this - if you can you should give a lot more credence to this answer).
'australian' becomes 'A' (common abbreviation).
'uprising' says the letters should be written in reverse.
'slam'+'in'+'a'='slamina'
'slamina' back-to-front is 'ANIMALS'.
Can you help me to learn more?
(Other definitions for animals that I've seen before include "Wild beasts" , "pets maybe" , "Fauna (as opposed to flora)" , "Beasts, creatures" , "Brutes" .)