Why DD might not want Snape for DADA job

[potioncat]

No: HPFGUIDX 94512

Viridis wrote:
> 
> I still think he reason is very mundane: Snape is a former 
criminal, possibly a murderer. Would somebody sentenced for shooting 
people get a licence for shooting school? As much as Snape is 
knowledgeable about (DA)DA, Dumble will be chin deep in letters from 
protesting parents, once the word would leak (and it would, sooner 
or later, trust Rita&co). Than he'd probale have to sack Snape for 
good.
> 

Potioncat:  Well, if someone committed murder with a gun, I wouldn't 
want them teaching poisons either.  I still think he certainly makes 
potions sound like Dark Arts in that first speech of his!

OK which side was I arguing?
Potioncat