Two Thousand Maniacs!
It was the second part of what the director's fans later dubbed "The Blood Trilogy" , a trio of films starting with 1963's "Blood Feast" and ending with 1965's "Color Me Blood Red" . 
<triplet> Blood Feast <subj> 1963 <obj> publication date <triplet> Color Me Blood Red <subj> 1965 <obj> publication date