When I retired in 2013, I thought my marching days were over. I was so wrong. The work for social justice never ends. Today is May Day, also known as International Workers’ Day or, in places like the United Kingdom, France and Germany, Labour Day. Here in the United States, it’s a time for workers to come together and advocate for labor rights and social justice. Parades, rallies, marches and protests. Grassroots activism at its finest. On this May Day, tens of thousands of protesters across America will fight back against the “war on working people.” Families over fortunes. Public schools over private profits. Health care over hedge funds. Prosperity…