How did Howard Plessy test the “separate but equal” statute in Louisiana?

Are people more motivated to change from positive or negative experiences, like slavery, womens rights, and any other historical movements/moments? i need more factual information than opinions.

The citizenship clause of the fourteenth amendment says a naturalized personis not a citizen and cannot become a citizen of the united states.is a citizen, just like someone who was born in the united states.must have been born in the united states, not in another country.must have been born in a country other than the united states

Ben's town is holding an election for mayor next month, and he is trying to decide which of the two candidates for mayor will get his vote. ben thinks that his town's air quality has decreased in recent years. because of this belief, what should ben look for when deciding on a candidate?