The press probably is both more biased and more sensationalistic than it used to be...and the public is paying less attention.
Martin Luther King Jr. owed much to an earlier generation of black religious thinkers.
Today's Islamic terrorism fits into a long history of sacred violence.
The enviromentalism movement may be bringing about its own demise.
The medical community keeps reversing itself, and the reason seems equal parts bad science and the cost of good studies.