what three cries of history do the great landowners ignore? why is this a dangerous choice?

Here is a quote: "The great owners ignored the three cries of history. The land fell into fewer hands, the number of the dispossessed increased, and every effort of the great owners was directed at repression. The money was spent for arms, for gas to protect the great holdings, and spies were sent to catch the murmuring of revolt so that it might be stamped out. The changing economy was ignored, plans for the change ignored; and only means to destroy revolt were considered, while the causes of revolt went on.”