Answer the question from the given passage. Your answer should be directly extracted from the passage, and it should be a single entity, name, or number, not a sentence.

Passage: Some forms of civil disobedience, such as illegal boycotts, refusals to pay taxes, draft dodging, distributed denial-of-service attacks, and sit-ins, make it more difficult for a system to function. In this way, they might be considered coercive. Brownlee notes that 'although civil disobedients are constrained in their use of coercion by their conscientious aim to engage in moral dialogue, nevertheless they may find it necessary to employ limited coercion in order to get their issue onto the table.' The Plowshares organization temporarily closed GCSB Waihopai by padlocking the gates and using sickles to deflate one of the large domes covering two satellite dishes. Question: When large groups of people all boycott a system or don't pay taxes it can be considered?
coercive

Passage: With International Criminal Court trial dates in 2013 for both President Kenyatta and Deputy President William Ruto related to the 2007 election aftermath, US President Barack Obama chose not to visit the country during his mid-2013 African trip. Later in the summer, Kenyatta visited China at the invitation of President Xi Jinping after a stop in Russia and not having visited the United States as president. In July 2015 Obama visited Kenya, as the first American president to visit the country while in office. Question: Who decided not to come visit the country in 2013?
US President Barack Obama

Passage: Some of the oldest schools in South Africa are private church schools that were established by missionaries in the early nineteenth century. The private sector has grown ever since. After the abolition of apartheid, the laws governing private education in South Africa changed significantly. The South African Schools Act of 1996 recognises two categories of schools: 'public' (state-controlled) and 'independent' (which includes traditional private schools and schools which are privately governed[clarification needed].) Question: In South Africa, along with privately governed schools, what schools are classified as independent?
traditional private