Or maybe there's no “dirty” or “clean” bitcoin at all. Bitcoin is just Bitcoin but law enforcement and these centralized exchanges are trying so hard to make us think that our Bitcoin have to be “clean” if the source is anonymous, then they are not clean. Also, they are trying to force us into abandoning to use Bitcoins for daily activities for the fear of the bitcoins you own being tagged as “dirty”
Let's be honest, have you ever had anything like Clean dollars and dirty dollars? Should we say that the USD has never been used for Money Laundering or Financing terrorism?