I love building things.  I started building a house out of matches.
Cool! David Mach is a Scottish sculptor born in 1956
What is he known for?
Well, many of his pieces are temporary and constructed in public places. He is what I refer to as an opportunistic artist
Interesting!  Did he get permission to do these pieces, or was it on a whim?
Mostly on a whim. For example, one of his most influencial was called 'Polaris' which is a replica of a submarine to protest the nuclear arms race
So, he was political?  Did the pieces accomplish his goal?
Yup. At one point a person took offense to one of his public art pieces and tried to burn it. It didn't work and he got burned instead. Fatally.
What!  He was killed by being burned alive?  Did they catch the assailant?
No, no, just some random person in public! Killed by his own stupidity I assume. I don't know all the finer details.