Said to put out on the streets - they’re very cruel (7)
I believe the answer is:
sadists
'very cruel' is the definition.
I can't judge whether this definition defines the answer.
'said to put out on the streets' is the wordplay.
'to put out' indicates anagramming the letters.
'on' is an insertion indicator.
'the streets' becomes 'sts' (st is an abbreviation for street).
'said' with letters rearranged gives 'adis'.
'adis' going within 'sts' is 'SADISTS'.
'they're' acts as a link.
Can you help me to learn more?
(Other definitions for sadists that I've seen before include "deviants" , "They like to hurt" , "Perverted pain-inflicters" , "They take pleasure form inflicting pain" , "People who enjoy inflicting pain on others" .)