49ers’ Colin Kaepernick rages against fan on Twitter
This is my Friday column. Dear Colin, Even though you are 27 years old and have been a starter in the NFL for three seasons, you still lack a quarterback’s temperament. It troubles me. You actually pick fights with fans on Twitter. You picked one on Wednesday. Let’s analyze what you did. This is a teachable moment. At 3:37 Wednesday afternoon, you tweeted the workout you did that day: “1000…
