OH god no. Democracy is a system which can easily trample on the freedoms of the vulnerable. It's why you need to engineer your actual system of government to give representation to the vulnerable that is hard to ignore.
Democracy is a system designed to give representation to the vulnerable. I suppose you're saying that it's possible to have a poorly designed democracy such as one that gives representation to the majority at the expense of the minority, which I agree with.
Pure democracy can be described as three wolves and a sheep deciding on what's for dinner.
Ha! That's funny. :) But not entirely accurate. The word "democracy" comes from the word "deme" which essentially a group of individually weak people who band together to make sure that they're all represented against other groups.
A deme was (and is) just a small municipality. There were plenty of powerful people who were members of and essentially ran a deme.
Individually weak people can band together and vote to steal from the less weak, but smaller groups. Does voting and being represented make stealing moral?
The tyranny of the majority is just as terrible as other types of tyranny.
Not all democracies are "majority rule".
What happens when those privileged are able to control the primary source of information for the population? It seems likely they would be able to convince the vulnerable to give up their freedom by convincing them it was in their interest.
That's definitely a threat to democracy, but the name of that threat is not "democracy" or "captialism", it's "propaganda".
That is true. The problem is deciding what is or isn't propaganda.