We’re too well armed...
Problem is we’re not the people living in the cities where SHTF would take place. For the most part a lot of people living in cities are more left leaning and probably don’t have the means much less the will to fight back.
The people that do have the means and will to fight back are spread out because they are self independent and the SHTF probably wont affect them personally.
For the most part, in more rural areas people of different races get along, not so in cities.
Blacks and Hispanics are as much a part of a rural communities as Whites and they wont sit back and watch their community destroyed by a bunch of outside agitators.
For a power grab the radical left wont need violence to spread outside the cities.