See if a hindu person wears the hindu symbol, they could then explain the context. Us non-hindus plastering their symbol on our clothes and whatnot would be a terrible thing to do even if we are doing it as a solidarity with the hindus.It's tricky isn't it, I think if you wore a t-shirt with the Hindu symbol in your link most people would immediately assume you were right wing. There is room for wider education across the spectrum when it comes to iconography.
The question if its offensive or not should be limited to all jewish people (especially all jewish football fans) not just spurs supporting jewish people.