These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Some Anvils Need to Be Dropped: However, the message that intolerance is bad still has its value even if it may seem obvious to us now. Keep in mind that people living in the time period of this film's production weren't exactly tolerant themselves.
"Funny Aneurysm" Moment: Griffith attempted to end the film on a glorious note with a special-effects shot of an immense cross of light appearing in the sky. Many contemporary viewers mistake this image for an atomic explosion, making the ending (in their minds, anyway) apocalyptic and tragic.
Values Dissonance: Portions of the film are (arguably) not very accessible to modern viewers because, while this film (unlike Birth of a Nation) is not morally repugnant, it deals with periods in history that most people simply do not consider important anymore. The Babylonian segments, for example, might have held more appeal in an era when Westerners were still fascinated by antiquity (in Griffith's time, many schools still taught Latin and Greek), but most Americans raised in the late 20th or early 21st centuries will not know or care about the subject matter. Then there is the French subplot, which doesn't really connect with modern viewers (except perhaps in Northern Ireland) since the Catholic-versus-Protestant controversy of old, while still present to some extent, has largely been replaced by the Christianity-versus-secularism dynamic today.
Values Resonance: Alternatively, the message that intolerance is bad still holds value today since multiple current human conflicts are essentially the result of intolerance.
Vindicated by History: The film was such a failure at the box office that it bankrupted Griffith's studio. Today, it's considered to by some to be one of the greatest silent films.