(Bloomberg) -- Australia is gearing up for a showdown with Elon Musk and US social media giants over allegations they failed to move fast enough to police graphic content and misinformation during two violent attacks in Sydney over the past 10 days.Most Read from BloombergElon Musk’s Robotaxi Dreams Plunge Tesla Into ChaosTikTok to Remove Executive Tasked With Fending Off US ClaimsTrump Has Only $6.8 Million for Legal Fees With Trial UnderwayTesla Spends Weekend Cutting Prices of Cars and FSD So