1. Let vulnerable and/or minority populations speak for themselves and listen to their valid concerns.
2. Ask all people, your friends and neighbors, how you can support them, especially when and if they feel threatened.
3. Never be a bystander to hate. Speak up and show solidarity. Step in to protect and comfort.
4. Unfriend, unfollow, and boycott any individual, organization or media outlet that disseminates or profits from hate speech, subtle or overt bigotry, victim blaming, or anything but respectful dialogue.
5. Don't engage in hate on social media, in fact, fight hate on social media. Reply to offensive Tweets and posts with "I may agree with some of what you believe, but that was racist (sexist, homophobic, cruel, etc.) and I cannot condone or support that language." The same is true for real life.
6. Don't, while in your own "in group" give a "pass" on casual racism or hate speech. Always speak up.
7. Make an effort to be involved in a community where you are not the majority race, gender, class, religion, etc.
8. Learn history, read books by people who are not of your same race/class/gender/sexuality/etc., travel far from your place of residence and engage with people in a different place (i.e. volunteer or attend a church service whilst vacationing).
9. Write letters, emails, Tweets, posts, and take part in any other sort of non-violent form of communication and demonstration against hate, especially if the hate speech or actions emanate from people in positions of power. Here is a way to share your ideas and standards:
https://apply.ptt.gov/yourstory/If you disagree with any thing on this page, write down exactly why and take this page and your carefully considered response to a group of people who are not a part of your in-group - stand as a minority viewpoint for a new perspective - and ask them to evaluate your justifications from their perspectives. Opposition viewpoints are important for a robust dialogue, and humanizing the conversation is important - person to person. If you can't find a group of people who are not in your in-group (racially, religiously, class, education, or sexuality-wise) that you would feel comfortable having this conversation with, then you are likely in an echo chamber.
Read this story about David Duke's god-son:
https://www.washingtonpost.com/national/the-white-flight-of-derek-black/2016/10/15/ed5f906a-8f3b-11e6-a6a3-d50061aa9fae_story.html