If a computer is a laptop with a built-in battery, then there is no risk (unless the battery is absolutely dead) of unplugging it from power. However, of a non-battery backed up PC (like an iMac or a Desktop), there could be problems, depending on PC configuration and current activity.
Updated February 23, 2017. The Haymarket Riot in Chicago in May 1886 killed several people, and resulted in a highly controversial trial followed by executions of four men who may have been innocent. The American labor movement was dealt a severe setback, and the chaotic events resonated for many years.
When fighting erupted between strikers and strikebreakers, the police beat strikers and fired into the crowd, injuring several strikers and killing one. The flier shown here was part of the outraged response to this killing. It called for a mass meeting at Haymarket Square on the next day, the evening of May 4. The gathering was smaller than expected, due to rain and cold; only about 1,500â2,000 people attended. Speakers addressed the crowd from the back of a wagon.