"Gays Against Sharia" is the EDL. People marching against it aren't marching in support of Sharia law.
Not directly. But by opposing those who do oppose it, they lend support to Sharia Law.
Which video was that? It's of course possible that EDL members were there, but my understanding was that wasn't the original group forming it.
There's some weirdness going on in general with it. They were painted as 'far right' and EDL whilst seemingly being neither. They were as far as I'm aware non violent and yet the antifa group were throwing bottles etc. This isn't what the media seemed to frame it as though.
Antifa's explicit purpose is to use intimidation or force to shut down support for those they oppose. Not to put too fine a point on it, but violence is inherent to Antifa's stated methods.
The general consensus from policing these protests is the AntiFa tend to be the bigger issue rather than the far right groups. Both cause trouble, but the AntiFa seem to cause the most flashpoints for disorder.
If one group is carrying out a protest and another group shows up with the explicit purpose of shutting down or disrupting that protest, then the above is the logical conclusion.
I've never understood this either. Most of the people I know who advocate opening the borders, defending Islamic beliefs etc are either female or LGBT. I also know quite a few supposedly moderate muslims and I can't think of a single one who is anything but entirely opposed to LGBT rights / feminism. It's like the turkeys voting for Christmas.
With the ones I know, it basically comes down to identity politics. A lot of these people define themselves in a lot of ways by those they feel persecuted by - with historical and sometimes current justification. Opposing or destroying such threats to their identity is a core part of what they want. They meld all opposition - racism, sexism, religious intolerance into one opposing bloc and term it fascism. By showing solidarity together, disparate groups who feel disenfranchised can become a larger whole and there's strength in numbers. They like that. This goes back quite a long way. Such people typically have an extreme Us vs. Them mentality between themselves and any in power. So it becomes a melange of anti-capitalism, anti-homophobia, anti-White Power, anti-Police. It's important to emphasise that I'm not talking about everyone who is against some specific prejudice. Most people in our country are against prejudice and rightly so. I'm specifically talking about a sub-culture that attempts to embrace any popular movement that accords with their general anti-establishment stance. This sub-culture perpetuates in a lot of universities as well as in marginalised (whether self- or by others) and can co-opt and even distort the original movements. For example, gay men being kicked off LGBTQ committees in Universities for not being oppressed enough. I'm not making this up. The NUS passed a motion advising universities that gay white males should not be included because their presence led to "bi-phobia" and other negative things. Most here have probably heard the term "Oppression Olympics". Well "Cis Gay Males" are off the podium these days. Gay women are alright though, I think because they don't have testicles and men are evil. Gay men got a pass but they've stopped acting like minorities are supposed to so they've been told to leave. Trans is the new Gay.
So to get back to the topic, there's essentially a sub-culture that identifies as "oppressed" and attempts to embrace any group that faces oppression by showing solidarity with it. That is worthy in itself but the motivation tarnishes it and distorts the goals. It also leads to a refusal to accept differentiation between opponents. How can it when it itself is built by uniting all disaffected by the idea there is a common cause? The very existence of gay men who are Right Wing and Statist, or of organisations that are fine with race but opposed to a religion, challenges the unity of groups like Antifa.
So to draw this together into an answer as to why you see "Turkeys Voting for Christmas" as you call it - LGBT rights protestors throwing bottles at people who oppose Sharia Law, the reason is because they have to. Their group identity is built around the idea of "Fascism" as this all-encompassing banner for oppression. Muslims have and still do face a lot of oppression. Therefore they are perceived to be another oppressed group that the Antifa octopus can wrap a tentacle around and digest. Remember - these protestors do not represent all in favour of LGBT rights, not by a long way. It doesn't matter if somebody like Tommy Robinson is not racist but is against Islam. It has to be a mask for racism. It MUST be a mask for racism. Anything else creates fault lines in the movement. Because if it weren't then they can no longer group everything together under the unifying foe of "Fascism".
They have not adapted to opposition that is more complex than skinheaded mobs who hate everyone. And I think by the time they do, the realisation will rip them apart. Islam is not a friend to any LGBT. A muslim might be (though none that I have known has been okay with it), but Islam is not.