LOL @ this being antisemitism 

 

This didn't really need a letter, did it?

 

So the Border Force agents interrogated two visitors, which is literally their job, and the only quotes of mistreatment this fellow can provide is:

 

"Keep quiet, look at me, are you clear with that? We are the bosses, not you". 

 

+

 

"They had to make sure you are not going to do what you are doing in Gaza over here."

 

Re the first quote, Border Force agents are largely power-hungry turds and that comment is a non-issue. 

 

Re the second quote, well, the Border Force agents have a fair point.