President-elect Barack Obama delivered a stirring and emotionally-charged speech at Chicago's Grant Park. To many around the world this was just another open-air, grand venue punctuated by pillars.

It was where, during the Democratic convention in 1968, a demonstration by thousands of anti-Vietnam protesters, gay activists, civil rights leaders and others turned into a globally televised police riot.

Hippies and others were chased down alleys and beaten, mass arrests were made and full-blown, state-sanctioned violence was witnessed by the world in their living rooms. It was one of America's biggest black eyes and something that the then-Mayor Richard Daley remained unapologetic about.

Britain will publicly list and ban entry of more than 200 people whose extremist views and "violent messages" are a threat to national security, the home secretary said Tuesday.

The plan announced by Home Secretary Jacqui Smith would group together Muslim extremists, animal rights protesters, anti-abortion activists, neo-Nazis and others she said "encourage or spread extremism and hatred through preaching violent messages." The list would include only people from abroad.

Smith said publishing the names — roughly 230 — amounts to a toughening of existing exclusion orders that already list and ban certain groups from Britain. Authorities expect to publish the list on the Home Office Web site in the coming months.