We know through painful experience that freedom is never voluntarily given by the oppressor; it must be demanded by the oppressed.
how does king support this claim?
by describing his own experience with waiting for civil rights
by providing quotes from militant civil rights demonstrators
by explaining the racist attitudes of white politicians
by recalling a dream of his in which all people were equal

From the statement above, King support the claim that: by describing his own experience with waiting for civil rights

from this line:

. . .painful experience that freedom is never voluntarily given by the oppressor . .

We can infer that king believe that the freedom toward a discrimination or unlawful treatment would not given by the oppressor without any effort. This become the reason why King led a non-violent protest to demand for equal treatment for racial minorities. His movement led to the creation of the civil right act of 1964.

four sitting presidents have been assassinated while in office but the first was abraham lincoln,

answer: both considered peasants valued members of society.

explanation: the ancient chinese and indian empires were large asian empires that had the same problems with other big empires, they had to work hard and sometimes fight in order to keep them united, they both relied heavily on their capacity to trade and to send strange and rare items to europe, and had the father as the head of the house hold in both societies, but they didn´t considered pleasants as valued members of their society, they were the bottom of the social pyramid in both of their societies.