A teenage boy has been arrested for allegedly threatening to 'Christchurch 2.0' a mosque in Sydney, causing concern among the Muslim community. The threat, made on Instagram, referenced the 2019 Christchurch mosque massacre. Community leaders have highlighted the increasing incidents of Islamophobia and anti-Semitism and called for political leaders to address the issue. The police response has been praised, and prayers at the targeted mosque have continued with increased security measures. Political figures have condemned the threat and emphasized the importance of standing against Islamophobia.