MOSCOW: On a bridge next to the Kremlin on a drizzly Friday morning, a lone Russian police officer stood looking at the half-dozen bunches of flowers laying in memory of slain opposition figure Boris Nemtsov. The symbolism was almost too much. Four years into Moscow’s full-scale offensive on Ukraine, which has seen President Vladimir Putin eradicate all forms of dissent and usher in strict military censorship laws that have silenced his critics, few Russians dared, or wanted, to pay tribute.