If one visual cortex is damaged, optokinetic nystagmus will be lost when objects move toward the side of the cortex lesion (that is, if they approach an individual from the side of vision impairment).
90-Year-Old Activist 'Granny D' Inspires Change, Walks Across Country. I learned a few very good things during my travels with Doris Granny D Haddock. The first, which sounds hackneyed, is that one person can make a difference. It's truer than I imagined.
Demonstrations, strikes, and sit-ins are all ways that an activist might work toward the change she believes in. The root word of activist is the Latin actus, a doing, a driving force, or an impulse. Someone who acts on what she believes is an activist.