There is another way to deal with these problems, serial offenders and people who are on the "rowdy sheets" of police will be given a special treatment. These guys after receiving that will not be able to fck any girl some alteration to his spinal chord in the name of beating or interrogation,you know what I mean.
Plus there will be a rumor that will spread as a consequence, this is punishment enough for life.
Death will not deter any one as these guys, but a slow death (punishment for life) will deter them. The horrors one has to face in his rest of his life ,because of police treatment will deter these guys.
This is followed in many countries and also in India.
Police will identify these beasts in the society and will apply this treatment, those guys can's even walk properly leave about fcking.