Your post has a few things wrong. People don't have to die for violence to happen. I believe you are correct that the coroner eventually declared Officer Sickwick's death was unrelated but that doesn't change the fact that he and other officers were attacked. You also seem to think that because some officers aided some protestors that proves all of the protestors weren't violent.

There are plenty of weapons out there that aren't firearms. You can be armed and not carrying a gun. While I'd agree that many of the injuries are consistent with a large crowd there are also documented cases of people in the crowd using weapons like tasers, pepper spray, and a flag pole. There are lots of pictures of zip tie cuffs being carried in the capital buildings. How often do you hear about people going to a peaceful protest expecting to capture prisoners? You need a license to carry a firearm in DC. It shouldn't be surprising that in a protest made up of people from outside DC you wouldn't have many people who have the right license. Flying with a gun is also a PITA so that's another reason some people who travelled to the protest may not have brought their guns with them.

Finally, there was at least one group that set up a cache of guns offsite so that they could ferry them in if needed [0].

[0] https://www.buzzfeednews.com/article/zoetillman/capitol-riot...