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.
The Burke and Hare murders were a series of 16 murders committed over a period of about ten months in 1828 in Edinburgh, Scotland. The killings were undertaken by William Burke and William Hare, who sold the corpses to Doctor Robert Knox for dissection at his anatomy lectures. Edinburgh was a leading European centre of anatomical study in the early 19th century, in a time when the demand for cadavers led to a shortfall in legal supply.