Black Lives Matter?

For me its like feminism, needed but a group of them take it to an extreme and overshadow the rest of the movement.

In Ferguson, the movement actually had what I would consider "Revolutionary Potential" which was ruined when the movement was hijacked by black supremacists and liberals.

What modern activist movement hasn't been hijacked by liberals? 

I'm certainly for the sentiment. Rioting and murdering random police isn't exactly a productive use of the Black Lives Matter movement's energies, and it's sullied their image, but this is a consequence that we should expect any time there's an eruption of (justified) rage from any oppressed/abused community that isn't well-organized and highly conscious of what can actually be done to resolve their situation. The people in Baltimore, for instance, at the time of the rioting, had been denied any constructive recourse within the system. So eventually the situation exploded.

But yeah-- as for the principle itself, of course black lives matter, and of course, as socialists, we should support the equalization of any situation of oppression (racial, sexual, ethnic, class, or otherwise). Clearly black people in our judicial/law enforcement system are a prime example of a subjugated group.

Actual liberalism hasn't been hijacked by liberals yet

This kind of disregard for the specific problems faced by specific groups of people is a very typical liberal position. This post was made several months ago, so you may have gained some perspective since then, but to all those that still think like this;

The idea that no person/group of people is more important or valuable than another, and that there is therefore no reason to talk about the rights of individual people/groups of people, is admirable in theory, but in practise it completely ignores the fact that modern society is structured in a way where this simply isn't true. Racism, trans-/homophobia, sexism etc. are all so deeply ingrained in our societal institutions, that people that are not white cis straight men have an inherent disadvantage in society, that doesn't just disappear no matter how much you refuse to acknowledge it.

In fact, ignoring it is in itself a type of silent approval, as conservatives/other authoritarian folk will continue to try to maintain and strengthen these injustices. Of course all lives matter and men are just as valuable as people of any other gender, but the fact is that SPECIFIC groups of people experience SPECIFIC forms of institutional oppression that other groups, in particular privileged ones, don't, and trying to hijack and generalise their movements in the name of "egalitarianism" is DISRESPECTFUL, HARMFUL, and an act of oppression in and of itself.