Among other things, Leary and his followers were deeply committed to what might fairly be termed an attentional revolution. They wanted the public to block out the messages of the mainstream media and other institutions, which they saw as little more than tools of mass manipulation. Instead the Federation was setting forth on an inward voyage, with a bit of help: to reconfigure the public mind and its priorities, Leary believed in the great potential of taking psychedelic drugs—like LSD—still legal then.

Tim Wu, The Attention Merchants, loc. 534