The crusades were intended to seize Jerusalem from Muslim control. The First Crusade was proclaimed by Pope Urban II (pope 1088–99) at the Council of Clermont in 1095 in response to a request from the Byzantine Emperor Alexios I Komnenos (r. 1081–1118) for aid against further Muslim advances. Urban promised indulgence to anyone who took part. Tens of thousands of people from all levels of society mobilised across Europe and captured Jerusalem in 1099. One feature of the crusades was the pogroms against local Jews that often took place as the crusaders left their countries for the East. These were especially brutal during the First Crusade, when the Jewish communities in Cologne, Mainz, and Worms were destroyed, and other communities in cities between the rivers Seine and Rhine suffered destruction. Another outgrowth of the crusades was the foundation of a new type of monastic order, the military orders of the Templars and Hospitallers, which fused monastic life with military service.
What Byzantine Emperor's request for assistance led to the First Crusade?
Alexios I Komnenos

In September 1997, during the process of revision of racial categories previously declared by OMB directive no. 15, the American Anthropological Association (AAA) recommended that OMB combine the "race" and "ethnicity" categories into one question to appear as "race/ethnicity" for the 2000 US Census. The Interagency Committee agreed, stating that "race" and "ethnicity" were not sufficiently defined and "that many respondents conceptualize 'race' and 'ethnicity' as one in the same  [sic] underscor[ing] the need to consolidate these terms into one category, using a term that is more meaningful to the American people."
How did racial categories appear in the US 2000 census?
race/ethnicity

Some claim that there is education inequality because children did not exceed the education of their parents. This education inequality is then associated with income inequality. Although critical thinking is a goal of education, criticism and blame are often the unintended by products of our current educational process. Students often blame their teachers and their textbooks, despite the availability of libraries and the internet. When someone tries to improve education, the educational establishment itself occasionally showers the person with criticism rather than gratitude. Better by products of an educational system would be gratitude and determination.
Who do students often blame for their education short comings?
teachers and their textbooks