[BLKNSLVR]

It strongly depends on your definition of necessary, and your linking of tourism to the reduction of ignorance.

No individual died from lack of tourism. One neither eats nor breathes tourism.

Yes, it was a large part of the world economy, so it is, or was, necessary to the status quo, and the status quo maintains many a lifestyle rich and poor, so it's specifically necessary to maintain the direction of the world as it was in late 2019.

But necessary like food, water, shelter, and healthcare? No, tourism is not necessary. Tourism is inaccessible to a percentage of the world populace, therefore it's not necessary.

Will governments define "necessary" after this? What mesh of dependence upon keeping their citizens alive will be determined? Will it even be considered in the rush to re-open?