Answer:
Racism, xenophobia, and eugenics are all forms of discrimination that can undermine democratic principles. Racism can lead to people being treated differently based on their skin color or ethnicity, which can make it difficult for them to participate fully in society. Xenophobia can make it difficult for people to move freely and safely around the world, and can lead to them being treated unfairly. Eugenics can lead to people being judged based on their genetics, and can result in them being denied opportunities or being treated differently. All of these forms of discrimination can limit people's ability to participate fully in society and can make it difficult for them to exercise their rights and responsibilities as citizens.