Lord of the Rings is a profoundly reactionary work, which is one reason I love it so much, but there are Leftist, or proto-Leftist, characters and attitudes.
The most obvious (pointed out by Tom Shippey) is Saruman, who talks much like a modern bureaucrat/ public relations specialist.
But Denethor is perhaps another - he has abandoned the religion of his fathers and become a utilitarian who, when the prospects seem bleak, chooses assisted suicide and euthanasia of Faramir as a means of avoiding further suffering.
(Although, admittedly, burning yourself and your son to death is not what a modern Leftist would call an 'easy way out'.)
Any other suggestions (with explanations)?