Guy does sounds like a tool but it does seem like there's just some cluster of people who really hate cyclists. I was cycling past London Bridge when my chain fell off so I took it to the pavement to fix it, just next to some road workmen doing some digging. I was nowhere near them, nor interacting with them, when two came over and asked me something mumbling and smiling. I assumed he'd asked if I needed help, I replied: "No thanks, I'm OK, I can fix this then my office is only over there."
He said "No I asked if you wanted a hammer."
"A hammer?" I said, confused.
"Yes, a hammer, so you can smash your bike up".
I nervously laughed and wheeled my bike away. But in my head I was thinking '...what a dickhead'