'Red-tinted glasses'

The metaphor, ‘red-tinted glasses’ symbolizes the limitations of our perceptions which further emphasizes how our minds become narrow-minded without us being aware of this process. Red is only one of the perspective and there many different colors like Green, Orange and Blue as well as different shades of colors.
Although we may not be born with a pair of colored-tinted glasses but the manner in which we are brought up with our values and culture as well as the experience we have gone through, we will eventually be wearing glasses of different hues. Religion and the environment we are brought up in also affects our view of situations and the world.
The red-tinted glasses reflect all colors but red and its shades. The colored lens acts as a filter and allows only us to see things in red and its shades. Due to the different points of views, conflicts and disagreements arise. We may not be able to remove the glasses but we can be open to the different opinions and options around us.
For instance, most of us believe that students from band 5 schools to be unintelligent and dumb especially academic wise. This is, in fact, completely false. Many of the students are bright and I know this so as there were a number of them who moved into my previous school which is a band 1. This is an example of stereotypes which unfortunately does exist in our society. We may think this way from what we hear from people around us or from the newspapers and ratings. We, then, simply judge students from band 5 schools and put them in the same category without looking at other possibilities.
In conclusion, Kant is trying to make us realize about the glasses we have been wearing without being aware of them. Through this, he wants to tell us to remove our glasses and see the ‘real’ world with a clear mind.