typically a racist dog whistle
I’m preeetty sure that’s just the name of the breed but there are some serious racial undertones and associations going on:
https://journals.plos.org/plosone/article?id=10.1371%2Fjournal.pone.0305959
https://notoleranceforantisemitism.adl.org/resources/hate-symbol/pit-bull
wat dot gif