Sure.
Leftism is an ideology which has as its underlying philosophy the good of the collective in a utopian framework based on a (false) determination of human nature, with such Utopia to be achieved by the destruction of those who oppose it. It has been called Bolshevism, Menshivism, National Socialism, Marxism, Leninism, Trotkyism Stalinism, and Fascism and operates under the umbrella term of Socialism.
is characterized by being revolutionary in nature with the movement led by a hard core cadre who are convinced of the scientific basis of their philosophy that will lead mankind into the future. Cult like, the righteousness of their cause makes those who oppose it the enemy who must be destroyed. Democracy is incompatible with Socialism, since Democracy requires free thought.
So how is that hate? Pointing out that the philosophy adhered to by so many leaves bodies in ditches?