Six of the ten are in California.
Several of the California cities on the list have high prices because everyone wants to live there, the lifestyle is great. Including San Diego, where I live. Several are high because they are near Silicon Valley and a lot of rich people live there and don't want to commute from Oakland.
Two of the cities are Metro DC, and the others are NY and Chicago. Not much to glean from the list except that there are some cities where housing is too expensive for young people. Now if you want to talk murder rate and correlate it to Democrat mayors, I think there is a much better case to be made.