Misdemeanor and felony were terms that both existed, but didn't have the same technical existence as they do today. Misdemeanor should be taken literally: mis-demeanor, basically a form of bad behavior, which may or may not be illegal. "High crimes and misdemeanors" then means crimes and sufficiently bad behavior in office, not literally the commission of a crime classified as a misdemeanor. Felony was closer to the current technical, in that it was any crime bad enough that you would have to forfeit goods or land. But they might have had in mind that committing a felony, while bad, was not necessary relevant to whether you should hold office. A "high crime" would be a crime of corruption, moral turpitude, etc (felony or not) and a misdemeanor would then be a blanket term of "any behavior bad enough that congress thinks it warrants removal". So it's both more precise and broader than either "high crimes and felonies" and "felonies and misdemeanors" would have been. Note that felonies are specifically mentioned in regards to interstate extradition in the Constitution. More on reddit.com

A lot of crime isn’t getting prosecuted. Most criminals are treated as catch and release. More on reddit.com

With regard to shootings, the problem is rooted in a extremely small group of people. In Washington DC it's, like, about five hundred people. They all have ten or more felony convictions apiece. See the National Institute for Criminal Justice Reform’s GUN VIOLENCE PROBLEM ANALYSIS SUMMARY REPORT In homicide events, between 31-33 percent of victims and 50-57 percent of identified suspects were group-involved. In nonfatal shooting events, between 11-38 percent of victims and 15-60 percent of identified suspects were group-involved. At least 91 groups were identified among the victims and/or suspects of homicides and nonfatal shootings that took place from 2019-2020. Of those, 19 groups were involved in three or more nonfatal shootings/homicides. Across homicides, five core groups emerged as responsible for the most violent incidents. More on reddit.com

So I want to point out a couple things: For starters, yes, homicides are down - but homicide numbers are largely skewed by gang violence in a small number of areas most people don’t go to. It's not necessarily representative of the type of crime people see and fear day to day. Property crime is trending up; this is real. The increase in property crime looks moderate at an overall national level, but it's more pronounced in specific areas. Like I live in the San Francisco Bay Area. Brazen theft from stores, car break ins, and tolerance of open air drug use have skyrocketed in the past 5 years. Walking through downtown SF in 2019 vs today is night and day difference. And Oakland, OMG - a city that was trending up a few years ago looks like back to a war zone today. You can see it in the shops that have closed, you can see it on reddit boards in the cities, and you can see it in us recalling our DA and everyone looking to clean house in the elections. London Breed (our mayor) is rapidly trying to clean up now that she fears her job. The police try to paint rosier crime stats, but every local knows its because reporting has plummeted because the police don't do shit. This is seen in a few other cities - Portland is the poster child, but Seattle, Portland, LA, Philly, etc have had their recent issues. While I don't think this smaller number of cities is necessarily representative of America as a whole, it is evidence that a particular brand of BLM - defund the police rhetoric really did have its advocates and has some big failure data points. Those downtown cores of major cosmopolitan cities have majorly outsized impact even if their stats get masked in national averages. Like the theatre district of SF being blighted impacts an enormous metro region of 8+ million people, and impacts tourism / conventions / entertainment to the larger region. Yes republicans will probably play this up and fear monger and paint a worse picture than it is like they always do to us here in San Francisco, but the locals of these places ARE pissed and there is a real issue and not some purely fabricated scare tactic. More on reddit.com