Read Orwell and Huxley.
If you want to destroy a population you don't do it through overt means, you do it through slow drip drip of sociopathy. You grind people down through physical suffering, and through physiological warfare.
You tell the population that 2 + 2 = 5. Men with penises are women and should have access to changing rooms and toilets with 7 year old girls.
You tell them that rape is fine. You normalise it by encouraging unrestricted access to hard-core porn, by not punishing misogyny in young men, by putting barriers in the way to report offense, by making the victim give up before it even gets to court and if it does, you give a laughable sentence instead of the 50 years the crime actually deserves.
You tell them that Theft is good. You allow criminals to steal with impunity and rack up 30 offences before you finally give them a proper jail term. You stand idly by as phones are snatched and people are stabbed for their watches, and shrug. You do nothing as shops are shoplifted and ram raided. You give out crime reference numbers and laugh.
You repeatedly ignore calls to reform the justice system and bring in 100 year sentences and death penalties for the most disgusting, heinous crimes. Instead you welcome rapists and murderers and pedophiles into the police force and you gaslight victims of crime.
You drive a rape victim to suicide by getting the dwp to sanction her benefit claim because the stoma she needs to wear and the life long trauma inflicted on her by a violent rapist who nearly destroyed her body through blunt trauma means nothing. She needs to stop going to therapy and go back to work now. She's a lazy scrounger. Meanwhile the vile scum who nearly killed her is having a great time on his ps5 in prison.
You allow vulnerable adults with autism and learning disabilities to be abused and exploited by carers at Winterbourne View and hundreds of other care homes and NHS hospitals, and you give the violent abusers 4 months in prison.
You let a vulnerable autistic man drown in a bathtub in an nhs hospital (Connor sparrowhawk) and then you allow the same NHS trust staff/management to blackmail and send threats to his mother when she exposes the rot in the NHS.
You allow an Ethiopian migrant to attempt to rape 2 women and 1 14 year old child in uniform walking on her way home from school in Epping in Essex, then you send in the riot squad to condem the righteous anger of local residents who turn up at the rapists' abode to protest
You remove staff from train stations. You cut police budgets. You cut cctv. You allow drug addicts and anti social scum to ruin neighbourhoods and then blame 'council estate culture' for it. You allow terrorists into the country to blow up arenas and go on rampages at London bridges or blow up tube trains. You make sure people feel on edge and nervous.
You neuter anyone who calls out what is going on.
In short, you do nothing to protect victims or ease their suffering. You do the reverse. You create a hostile society that rewards sociopaths and punishes virtue, like a giant Stamford mouse experiment.
And this is the result.