114 unarmed Americans were killed by police in 2019. [1]
While any number other than zero is unacceptable, that is also 0.000035% of the US population, or a one in 2.8 million chance. If you are African-American, that goes up to a one in 1.5 million chance – also unacceptable, while at the same time a vanishingly rare occurrence.
You are 328 times – that's 32,800% – more likely to die of suicide than to be killed by police. You are 733 times more likely to die of diabetes than you are to be killed by police.
Police reform in the US is absolutely needed. But suicide prevention and healthy eating are objectively much greater problems that need solving, and are at very least worth as much of "a talk" with developing children.
[1] https://mappingpoliceviolence.org/nationaltrends [2] https://www.cdc.gov/nchs/fastats/deaths.htm