https://www.washingtonpost.com/history/2021/01/13/fdr-roosevelt-coup-business-plo
A series of Presidents since Reagan, working with both ReThuglicans and DemoRats "across the aisle" have undone a lot of FDRs programs that not only brought us out of the Great Depressions, but created the longest economic boom and most widespread prosperity in history. Unfortunately, those same business types have effected a coup culminating in "Citizen's United" which established the legal principle that corporations have a right to speak as loud as they have budget to and buy votes through paid messaging.
The regulations on media were erased by Reagan and Clinton, leading to megacorps controlling the public discourse from radio and TV networks to social networks, rolling up broadcast stations and cable distribution with newspapers and guaranteeing a slant to all outlets.
The regulations on financial services were likewise undone, leading to a series of bubbles and crashes that continue to this day. The progressive taxes on both earned and un-earned income (inheritance, dividends, interest and capital gains) was rolled back, Social Security taxes were more regressive with inflation and concentration of wealth, which is now nearly at the level of Crassus, who with the Chinese Emperor at one time held perhaps 30% of human wealth.
The Capital is now occupied by a hodge-podge of legal jurisdictions such that the structure serves much better as a series of barriers than as an adventurous invasion. There are the Secret Service and Capital Police at the core, Then US Marshalls and FBI, the DC Police and DC National Guard under the Mayor, and National Guard units who are led by the governors of Maryland, Virginia, New York, Pennsylvania usw. AFAIK the six military services are only peripherally involved, as are ICE and other DHS types.
Bear in mind that 76% of terrorist attacks since 2001 have come from Christian identifying, right wing, white hate groups formed of American citizens.
The Antifa straw man is not an organization like the illegal underground armed militias, and BLM was infiltrated by violence instigating provocateurs and professional thieves using protests as cover to target high-end stores. Most of the property damage and looting dollar value did not originate in the protests that were targeted last summer by extra-judicial federal forces under the Orange Wrestling Clown.