A friend died suddenly this week. Andrew Breitbart, widely considered to be controversial, relentless and profane. To me, the mission he pursued was simple: He hated bullies, especially the politically-correct bullying tactics of liberals. His goal was to expose and shame them.

Beneath an unpredictable exterior, he cared deeply for his family and friends and was immensely loyal to them. Breitbart admitted his own faults, even in his book, and was amazed that he had found a purpose in his life—namely to right wrongs.

Resisting pressures to conform, Breitbart took joy in being unique. He took time to focus on the upcoming generation and show them that living by principles can actually be fun.

Andrew Breitbart showed passion, gusto and courage. And he left a legacy that challenges us all: Don’t be bullied; be bold in standing for what you believe.

Former Rep. Ernest Istook is a member of the Tea Party Patriots Board.