My question is should we view the tragedy of Karbala moreso as a praise of the Ahlul Bayt or should we view it in terms of its broader messages (such as justice and imaan and oppression) without so much focus on the Ahlul Bayt? My understanding of Karbala was not with a focus on the ahlul bayt, but of the universal ideas of divine justice and truth.

It depends upon a person how he feels like observing Karbala in light of teachings of Ahl e Bait a.s.