I do think it is a shame so many on here suspect every one who knocks on their door does so with nefarious intent, the people who knock on your door trying to set up an appointment for windows or whatever are just trying to earn a living and I find a polite no thank you works very well.
Another assassination attempt on Donald Trump
have you ever been mistaken for a race/ethnicity/ancestry that you are not?
What do you think animals think about sharing the planet with humans

. And he also had the cheek to say "I was just saying to my colleague I haven't seen a solid door like this (our chosen front door last year) for years". When my OH said we had opted to have it like that he didn't know what to say. 