For the sliders: Preheat the oven to 300 degrees F.
In a food processor, combine the olive oil, brown sugar, chile powder, smoked paprika, salt, pepper, cayenne, garlic, jalapenos and onions and blend until a thick paste forms. Rub the paste all over the pork and place in a large Dutch oven skin-side up. Add 1 cup water, cover tightly with a lid and roast until just tender, 4 to 5 hours.
Remove the lid and continue cooking until the pork is falling apart and a dark bark has formed, 1 to 2 hours longer. Allow to cool slightly.
Remove the pork from the pot and remove and discard the fat. Shred the pork with 2 forks. Remove as much of the fat as possible from the sauce, then transfer the shredded pork back to the sauce. Stir in the spicy barbecue sauce to just coat the meat.
For the fixings: Serve on mini buns with a toppings bar including bacon, Colorful Coleslaw, a variety of pickles [regular, pickled red onions and pickled jalapenos], whole-grain mustard, spicy barbecue sauce and hot sauce.
Combine the mini sweet peppers, carrots and cabbage in a bowl. In a separate bowl, mix together the milk, mayonnaise, sugar, vinegar, salt and hot sauce. Pour over the cabbage mixture and toss to combine. Add the cilantro and mix. Cover and refrigerate for 2 hours.