Complex sentence: The feuding goes on, but causes repercussions beyond Woodcrest--impressionable teens start beating up old people in response to the "Eff Granddad" video, especially ones bearing resemblances to Granddad.
Split into simpler sentences: The feuding goes on, but causes repercussions beyond Woodcrest. Impressionable teens start beating up old people in response to the "Eff Granddad" video, especially ones bearing resemblances to Granddad.