The US hasn't had the "horrible disturbances" that Europe has had.
I guess if you omit the civil war, ww1, ww2, the great depression, the financial crisis of 2008, racial strife, 1970s stagflation, and any number of major disruptions from the historical record, youre right.
Well, neither ww1 nor ww2 was as damaging for the US as it was for Europe... but then again, we started them ;-)
In the U.S., after horrible disturbances, we watch the two parties blame each other on talk radio, Fox News, and MSNBC and then vote the same parties in.