Leon's owner Ron Singer died in July
Prominent activist died at his Mount Vernon home
Sophie Lee shot to death on Friday morning
Conservative groups challenged system’s policy
Senator is backing anti-establishment Democrats across the country
Leon’s closed in July after its owner’s death
District facing federal lawsuit, White House threats over guidelines
Four school districts under federal investigation
District faces possible legal action or loss of federal funding
Ferals is a women's-plus team within the Flamingos