Should we also abandon cross? So many people died during the Crusades

Quite a few people died on the crosses themselves, including one very well-remembered.

To be perfectly fair, though... it is a morbid symbol.

Had the Romans been fond of hanging, Christians might be walking around wearing nooses around their necks.

The cross is a sign of solidarity for supporters of one particular person who died on it, not as a sign of solidarity for the people who put him on it.

Similar things can be said about swastika, it's not a sign of solidarity with the people who were killing others during the war

A few times a few at least, and that’s only counting extermination in the KZ’s and VZ’s. If you consider the total casualties of the war, including combat deaths (even German) and civilian casualties outside of the camps, it’s more in the realm of 50-80 million. Subtract 3-5 million for the Pacific theater, and it’s still a lot.

It also doesn’t help that neo-Nazis work today under the same banner.