I decided to do some legwork here.

https://www.bbc.com/news/live/c9q7r4wpep0t

TL;DR: UK politician

From what I read this politician didn't blame Amazon, she criticised the government's failure to monitor the attacker:

> She says he was referred to counter-terrorism scheme Prevent three times, but his case was not referred onwards

She also said that regulating the sale of large knives could help reduce stabbings, in the same way strict gun laws helped stop school shootings.

Honestly, in South (and North) America, everyone's carrying a gun. I wish we were talking about knife control instead.

IMO, we need to look at what countries like the UK and China are doing, where civilian gun ownership is almost completely banned.