It’s shame when/that people throw things away.

[diamondcutter]

“It’s a shame when people throw things away,” Miss Hannah said. “Everything in the world is beautiful. Everything can be used to make some kind of art.”

Miss Hannah is Bananas! Dan Gutman

In the first sentence, I think the word “when” can be replaced with “that”. I’d like to know if there’s any difference between the two words in that place.

 

[Yankee]

Basically interchangeable, but using "when" could refer to a previously mentioned example.

 

[emsr2d2]

Did the original really say "It's shame", not "It's a shame"?

 

[diamondcutter]

Sorry, it was a typo. I've added it.

 

[Tarheel]

Sorry, it was a typo. I've edited it.

 

[emsr2d2]

I think the OP meant "I've added the missing word".