How do we know it was anti-asian hate? Was the killer non Asian?

Edit: Why am I being down voted for asking a question the article literally says:

> We do not have all the answers, and we may never know whether her death was motivated by racial animus.

> there are many people out there who vandalized her memorial in support of her murderer.

For someone who has no idea who this chick is, why are there people happy she’s dead?