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We study collisions of boosted rotating black holes in $D=6$ and 7 spacetimedimensions with a non-zero impact parameter. We find that there exists an openset of initial conditions such that the intermediate state of the collision isa black hole with a dumbbell-like horizon which is unstable to a localGregory-Laflamme-type instability. We are able to provide convincing numericalevidence that the evolution of such an instability leads to a pinch off of thehorizon in finite asymptotic time thus forming a naked singularity, as insimilar unstable black holes. Since the black holes in the initial state arestable, this is the first genuinely generic evidence for the violation of theWeak Cosmic Censorship Conjecture in higher dimensional asymptotically flatspacetimes.

Evidence for violations of Weak Cosmic Censorship in black hole collisions in higher dimensions