Bo Porter didn’t need to be reminded what the day meant. The Astros manager knew, and he was proud to take part. Monday was Martin Luther King Jr. Day. It also served as the day of President Barack Obama’s second inauguration. Add in an Astros appearance at the Urban Youth Academy — the north Houston baseball facility is an outlet for disadvantaged youth and is surrounded by urban blight — and Porter stood a little taller and spoke with extra pride while discussing what it meant to be one of three African-American managers in major league baseball on MLK Day. “It just goes back to appreciating those who have come [...]