Criminal convictions stretching as far back as 1975 will be overturned in an attempt to heal some of the damage of America’s decades-long war on drugs. Prosecutors in Los Angeles will dismiss around 58,000 cannabis convictions in an attempt to “reverse the injustice” of America’s decades-long war on drugs. Los Angeles County district attorney George Gascón said on Monday that his office would expunge the convictions of tens of thousands of people found guilty of…