Security in Seattle has been kept at the same level - relatively high - for many years. If a tourist behaves in compliance with basic security measures, he is unlikely to become a victim of crime. It is safe for tourists from any part of the world to walk the streets of the city during the day.
Racist conflicts are the least common in Seattle. However, you should still refrain from walking around the city unnecessarily at night.
The most common crimes committed in the city are related to the possession and distribution of drugs. However, it is the poor and undeveloped areas of the city that are the worst offenders. It is the outskirts of the city, where these crimes are most often committed, that are considered to be the most dangerous neighborhoods in Seattle.