The 1920 article by Mises is as unknown today by graduate students in economics as it was in 1990, 1950, or 1930. But at least one man in the socialist camp admitted to the New York literati that Mises was right.
Useful goods and services, and the productive resources needed to create useful goods and services, are wealth. Money is not wealth, and creating more money without first creating wealth is a big problem.
It's increasingly clear two things are going on: leftists are very interested in taking their rioting and looting far beyond city limits, and government police are not interested in doing much about it.