Wait, isn't socialism all about class solidarity? "Working together regardless of class to fight a common enemy" sounds more like nationalism where at the end the upper class profits most. Unless we are talking about a classless society but that's not "regardless of class" but "with no class distinction" which sounds very similar when I think about it.
Sounds more like social democracy, which can include managed capitalism and cooperation between workers and owners. To a degree.
Socialism is about making the working class the ruling class. It is explicitly about oppressing the bourgeois class, which is itself the current ruling class oppressing the working (and other) classes. The idea is to take the means of production and run it for ourselves rather than the profit of a class defined by merely owning factories, buildings, tools, etc.
The cartoon may be confused.