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.
A riot breaks out in Haymarket Square What begins as a peaceful labor protest in Haymarket Square in Chicago, Illinois, turns into a riot, leaving more than 100 wounded and 8 police officers dead. After Chicago authorities arrested and detained nearly every anarchist and socialist in town, eight men, who were either speakers in or organizers of...