Why was there a great effort on the part of the American government to build up hatred for all things German during World War I? What are the possible costs
and benefits of such an effort?

In ohio in 1872, the cleveland massacre was a violent labor dispute at standard oil refineries in cleveland. a takeover by standard oil of the refineries in cleveland. an attempt to stop standard oil from becoming a monopoly. a failed attempt by standard oil to take over other refineries.