If you work in a system, you bear responsibility for what the system produces. “I didn’t know” and “that’s not my department” not only deny personal responsibility, but they also diminish opportunity. If you have a role in the system, you have some say in what the system does.
Systems don’t do anything automatically. They are built, maintained, and steered by people who use them to their desired purpose. The people steering the system today may have the same purpose as the people who built it, or they may not. So what is my purpose for the systems I occupy, and what can I do (like, tomorrow) to advance it?
YoRocko! 
“I didn’t know” is one of the harder sentences to pronounce, right up there with “I was wrong.” I always want to fix both of those. Thanks for the reminder.