I don't think even the left knows what "diversity is strength" is supposed to mean

For something like 20 years now the far left, most prominently in Europe, has been repeating the mantra "diversity is strength", over and over and over. They were saying it 20 years ago, they were saying it 10 years ago, and they are still saying it to this very day, over and over and over, at every possible opportunity.

The thing is, and I'm not making this up, during these 20+ years I have never heard, not once, any of them even trying to explain why or how. Not once. They just repeat the mantra as if it were a self-evident fact that doesn't need explanation. It just is, because it is, period. No explanations needed.

Recently some Irish TV program interviewed a school teacher about how there are children from multiple nationalities in her class, and how many of them are struggling with even basic understanding of English, and how this requires extra resources to try to teach them to understand and speak English, and how this is a burden to the schooling system.

The thing is, she was not being critical of the "diversity" in schools. On the contrary, she was defending it, the tone being that these extra resources are necessary for the greater good.

At one point in the interview she says: "And while diversity is strength, it is challenging without the extra staffing and resources."

When I saw that, it suddenly hit me: Not only did she mindlessly repeat the mantra, but I don't think even she knows what that "diversity is strength" is supposed to mean.

In fact, I think it can be generalized: I don't think pretty much any leftist activist knows what exactly it's supposed to mean. The fact that they never explain it is not because it's self-evident and doesn't need explanation. It's because even they don't know what it's supposed to mean.

I wouldn't be surprised if a large-scale poll was made with far-leftist activists about whether they agree with the sentiment "diversity is strength", and then when they answer in the positive, they are asked what it means, they would struggle to give a coherent and clear answer.