Sectumsempra and the DEs

[FrisbeeK]

No: HPFGUIDX 151459

> stevemac:
> 
> He does try to use several curses at the very end as Snape and 
Draco  
> try to flee the grounds (the key word being TRIES).
> 
> He tries (one assumes) CRUCIO twice, a few others, then 
SECTUMSEMPRA.  
> It's seems to be blind rage and assumed self-defense in the cases  
> where Harry does KNOWINGLY use Dark Magic, but he does try it - 
it's  
> not "below" him.
>

Frisbeek:

And remember when Harry tries to use the Crucio curse against 
Bellatrix; she laughs at him and tells him he has to mean to hurt 
someone when he does it.  I think when Harry is chasing Snape, he is 
just angry and can't control his anger.  The anger makes him try and 
lash out and hurt Snape - who he blames for DD's death - and use 
curses that he probably wouldn't choose consciously to use.

It sounds like it has to be a choice to use dark magic unlike regular 
magic that just happens.  Similar to the choice Harry has/had to make 
to go after Voldemort despite the vision/prediction.  Remember DD 
getting frustrated and making Harry realize the distinction between 
facing Voldemort because it was predicted it would happen and 
CHOOSING to face Voldemort because it was the right thing to do and 
he was the only one that could do it.  I think Harry would have to 
consciously choose to use dark magic for it to work effectively.