Police killed more than ten black men in 2019.
You're very likely getting your information second hand from Charlie Kirk of Turning Point USA. He made a similar claim with eight black men about a month ago. The Washington Post's database, which includes only people shot by police, not killed through other means like beating or tasering. That database is also woefully incomplete. The number of unarmed Black men fatally shot by police is likely higher than the Post's count due to a lack of comprehensive police records. Despite these issues, the Post's database shows police fatally shot 13 unarmed black men in 2019, not ten.
The Post said its team relies “primarily on news accounts, social media postings and police reports” in addition to its own reporting. Also, police fatally shot an unarmed Black woman, Atatiana Jefferson, 28, on Oct. 12 in Fort Worth Texas. But the Post's database covers only shootings. It does not include deaths caused by beating, tasering or vehicles. George Floyd’s died in police custody after a police officer knelt on his neck for several minutes, which would not have been included in the Post’s data set.
Mapping Police Violence, a crowdsourced database that includes deaths by vehicle, tasering or beating in addition to shootings, estimates 25 police killings of unarmed Black men in 2019.
Another thing, I would like to see is a more thorough source of data collection so that we can actually track how many unarmed people die as a result of police brutality, negligence, or general incompetence. A thing that shouldn't be necessary if the departments took the proper precautions and fired those with repeat offenses instead of waiting for their offenses to become public.