Describe the pervasive nature of "jim crow" laws. how was the system enforced, formally and informally?

Jim Crow laws were laws that led to the systematic segregation and oppression of African Americans in the United States between 1876 and 1965. Jim Crow laws were a series of laws that were created and enforced at the state and local level to segregate and oppress African Americans from receiving access to state resources and institutions like education and others. The system was formally enforced by the police and by the courts. For example African Americans could be disallowed from entering restaurants or were forced to use specific water fountains or could not enter certain schools. The police in the South generally where the laws existed would enforce these laws brutally at times as well as the courts. 

1920 census

the census was scheduled for january the 1st, as the government believed that more farmers would be in their homes by that time instead of april. the census did not ask about unemployment, the number of children, and how long was a couple married were not taken into consideration. individuals were considered as residents of the places they normally slept, not the places were they worked at or visited.

2010 census

the census was scheduled for april 1st, 2010. it was the shortest census in history: it only contained 10 questions related to name, age, gender, ethnicity, relationship, and whether the citizen owned a home or rented one. the government launched a website in order to provide the citizens with information regarding the census. there were also "teach census weeks" in schools nationwide.