Automobiles. Especially in the USA they are causing a public health crisis, environmental crisis, qualify of life crisis. I grew up loving them and they have uses but I’m fully convinced in the future they should be a luxury used for specific tasks or trips rather than the only form of transportation available.
They also acquired and still run the business previously done by Monsanto known for things like agent orange and eliminating corn biodiversity. Their legal department is also infamous for bankrupting small farmers.