By Alexander Kabanovsky in Berlin Killing Alexey Navalny may be a huge mistake as Putin tries to crush dissent. It is a sad day for anyone interested in Russia and the former Soviet Union. Whether you are an idealist who believes that the only problem in Russia is Putin, or a realist who sees the fundamental flaws within the “Russian Soul,” Alexey Navalny, for all his flaws, represented a brave, unyielding voice in the wilderness refusing to succumb to fear of a merciless regime. Alexey Navalny died at a brutal penal colony, originally part of the notorious GULAG prison camp system, in Russia’…