This could be an exaggeration. But it is substantially correct, all the same.

Agenda-driven news.

Or you could say "values driven."

First 8 Days: ‘Gay’ Jason Collins 2,381 News Stories; Gosnell Abortion-Murder Trial 115 Stories – 1,970% Difference in Coverage

The media are certainly celebrating the heck out of Jason Collins, treating his announcement like a breakthrough to be welcomed and a permanent, new landmark.

Not a lot said about Gosnell.