These 300 billion $$ is wealth of the society lost to political bullshitters and censors.
Also: Money laundering is beautiful.
Discussion
Why do people never ask this question? 
Haha ridiculus ratio
https://www.tandfonline.com/doi/full/10.1080/25741292.2020.1725366
They mention multiple sources and estimates, so it's good start to see different estimates. This is among the most conservative.
I would add these not so much fun things:
A 2018 study by the Financial Action Task Force (FATF) found that less than 1% of criminal proceeds are laundered through the formal financial system.
A 2019 study by the IMF found that the cost of AML compliance for banks is estimated to be between 0.1% and 1% of global GDP.
A 2020 study by the World Bank found that AML compliance costs can be particularly burdensome for small and medium-sized enterprises (SMEs).
0.1% to 1% of GLOBAL GDP(!) to fight paper dolls. OMG.