The same was true for photographs yet we survived following the invention of photoshop. The truth is that you don't even need video or photos to trick stupid people. Text alone allows for political campaigns flooded with slander, fabrications, and misinformation and some percentage of the population will fall for it. I'd say the best thing we can do is better educate the public to think critically and become media savvy, but instead we'll be forcing our children to read bible verses in school so I don't see the situation improving any time soon.