[Stentor]

it contains notes expressing hatred of certain groups, according to the officials, who did not elaborate in detail.

What do we know about the victims.

[Second Amendment First]

As noted by a commenter to the article:

In a story on the gunshop that sold the shotgun, they quote the gunshop owner saying:
“ he didn’t ask about [assault] rifles; he didn’t ask about handguns. He said he had a limited budget and didn’t need any of that tactical stuff.” — Rockville Gunshop Owner

Notice the modifying term “assault” was added by the Post even though the gun shop owner said only “rifles.”