So the 'increase' in hate crimes is likely a myth perpetuated by those with an agenda?
I think that's the most likely explanation. The definition and the method of counting incidents has been changed in ways that are very effective at hugely inflating the figures. It's possible that it's unintentional, but I think it's more likely that it's deliberate.
On top of that, there's the ongoing increase in group identity politics. That will inevitably increase the number of cases in which people interpret (or pretend to do so as an excuse for bullying or propaganda) things as being about group identity when they aren't and as being hostile when they aren't. The classic example is a man holding a door open for people behind him and a sufficiently devout feminist interpreting that as a hostile act against women.
Then there's outright false accusations of "hate crimes", of course. Easy to do, politically useful and with no significant risk. All that's required is to go to a website and make something up. Instant increase in "hate crime" figures. Even if there is any investigation, there's hardly any risk because the whole point of "hate crime" rules is that they're wholly subjective and thus usually impossible to disprove. If person A accuses person B of a "hate crime", how can person B prove person A wasn't really offended? Unless the accuser makes factually false statements that can be disproven (e.g. when a journalist was accused of interrupting a person's phone call on a train to ask if they were phoning their boyfriend he was able to use surveillance video in the train to prove he never went near the person) they're completely safe to make a false accusation.
These things might be less effective if large numbers were involved, but they're not. For example, a reported 57% increase in "hate crimes" was reported in an area of London. A huge increase...in percentage terms. That 57% increase was an extra 31 reports. To a website. Without any checking. Or evidence.
We really have no idea if there has been an increase, a decrease or no change because nobody is monitoring how many actual hate crimes there are. It's far more politically useful to include all sorts of things that aren't hate crimes, use various techniques to inflate the figures and then pretend all of the resulting number represent serious assaults motivated solely by irrational prejudices.
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