Germany's justice minister proposed a law Tuesday that could see social networks such as Facebook slapped with heavy fines if they fail to wipe illegal hate speech from their sites. The minister, Heiko Maas, who has been highly critical of Facebook's efforts to clamp down on outlawed racist and xenophobic posts and comments, said the new measures could carry penalties against the offending company of up to 50 million euros ($53 million). "These have proved insufficient, and they (the posts) are not being deleted quickly enough," Maas told reporters, citing data provided by internet watchdog jugendschutz.net.