From my understanding of politics, the left wants government to control everything and everyone, government to them is beneficial to a society, if you're fully to the left, you end up with communist and socialist ideals - the government takes a proportional amount of resources and provides free food, free housing, free healthcare and a number of other resources for everyone, ultimately having rules and regulations that covers every single entity and interaction is most important to make society a better place for everyone.
The right wants government to be as small as possible or non-existent, fully to the right you'll find anarchists and libertarians. They don't want anyone to interfere with their personal wealth or personhood, belief systems, guns etc and won't interfere with others' matters, even if a particular policy isn't beneficial to society as a whole, ultimately freedom is most important to make society a better place for everyone.
When you form a meta-society like Wikipedia, you end up with both people at the table, people that don't want any interference and people that want to regulate the 'society' to make it a better place. The left, per definition, steps up to do this job to make said rules and regulations unless there is sufficient interference from people that per definition do not want to interfere.