Ted Bundy murdered girls and women in the 1970s and probably in the late 1960s.
You cannot compare the 1960s, 1970s, 1980s, or even very early 1990s to today or the 2010s-2020s. There was no internet back then, 99% of people did not have mobile phones as the ones that were first around were super expensive, cameras were not everywhere, and there was no social media, people including young children actually socialized in public or would go out and it was no big deal if nobody knew where they were.
en.m.wikipedia.org
I have met and been around two actual diagnosed sociopaths, and a psychopath. They blend in super well, are extremely manipulative, and despite what armchair psychologists claim there are not signs or body/facial language that really makes them stand out.
I am not sure why you are bringing up Ted Bundy versus black people? The majority of black people both in the USA and in other countries are not in gangs, do not sell/use drugs, are good people, and they do not like other black people who are thugs, drug dealers, into drugs, criminals, etc.