I had real trouble going near Port Arthur in Tasmania, Australia, after the massacre there in 1996. I was living in Perth, on the other side of the country at the time of the tragedy, but I knew the area well having spent a lot of time over more than a decade with my ex-wife at her family's beachside holiday house. I went back to live in Tasmania, and took a few years to visit the area.
I then lived through the 2009 bushfires, and it was tough going back to the ruins of the house where I lived, cleaning up the mess at work, and working in the worst-hit community in the recovery process.
So I can understand any reluctance to go ride through this area. Unfortunately, the effect on the local community will be deep and long-lasting. Nevertheless, they will need support, and riding there again actually will be a good thing, even though it might not seem that way for a while.
Just do it normally. The communities don't need rubbernecking tragedy tourists.