This article says Capitol police officer died of a stroke.

https://www.kare11.com/mobile/article/news/local/capitol-police-officers-hit-by-their-own-pepper-spray/65-678cac49-f4e9-475c-b35e-81803ca63b97

This article says bear spray deployed by "rioters" on Capitol police and may have contributed to Brian Sicknick's death.

https://www.insider.com/capitol-police-brian-sicknick-death-investigators-looking-into-bear-spray-2021-2

This article also mentions a stroke killed Capitol police officer (same source as above) and says police were hit by their own chemical irritants as well as those deployed by rioters.

https://www.wusa9.com/mobile/article/news/local/capitol-police-officers-hit-by-their-own-pepper-spray/65-678cac49-f4e9-475c-b35e-81803ca63b97

Read weeks ago that Brian Sicknick's brother spoke to him the night before he died and the late officer told him he was okay but had been hit twice with pepper or bear spray. Wonder if the delayed effects of the chemical irritants caused the stroke. (No head trauma from fire extinguisher lie.)

Wonder, too, if silence around it - and other 4 deaths - is because deadly chemical agents caused Officer Sicknick's death - and 3 of the 4 reported civilian deaths (1 by gun shot) - and further wonder if so, were fatality-causing chemical agents deployed by law enforcement?

If so, all 5 deaths may have been caused by Capitol police.

Justified or not. Needs to be explored. And reaction-planning, advance decision-makers questioned. If deaths were planned through use or overuse of lethal chemical agents - not specifically (other than AF veteran's death - a possible FF), but generally, as perhaps random sacrifices to further "insurrection incitement impeachment" narrative, then someone needs to be charged with murder.