Everyone has beliefs which they think are simple and obvious. In 2017, I have become aware that some of mine are a lot more controversial than I imagined. Back in February I started assembling a list. Here's what I have so far.
Apparently controversial opinions in 2017:
Everyone should have healthcare covering essential treatment. What counts as essential should be decided by panels of trained medical professionals.
Everyone should vote.
Slave labor is wrong. Always. Even if it's convicted prisoners doing it.
Contraception is a good thing and should be legal.
Torture is bad. It is always morally wrong and it doesn't work.
All Nazis are bad.
Adult men trying to have sex with underage teens is bad.
Science is good. It is the best way we know to learn about the world we live in.
Facts and non-facts are different. Fact is not just a matter of opinion; we can determine which things are facts, and which are not facts. We can do this using science; see above.
Art is good. Everyone should make art and appreciate art.
Immigrants are good for America. The entire nation is an experiment in whether you can have a nation of immigrants held together by principles.
Everyone should have enough food to eat.
Everyone should have a place to live.
Compassion for others is good. A person who cries because they feel bad for what is going to be done to others, is a better person than one who feels nothing.
Diversity is good. Meeting people of other races and other faiths and getting to know them is good for everyone involved.
Children should never be kept in cages.
Seeking refugee status is not a crime.
A place where large numbers of people, especially prisoners or minorities, are imprisoned in a relatively small area with inadequate facilities, is correctly called a concentration camp. Not all concentration camps are death camps where people are deliberately mass murdered.
Children should not be separated from their parents and placed in concentration camps.
Children should not be placed in solitary confinement.
Children who do not speak English cannot represent themselves in a US court of law.