A striking example deserves checking before it becomes your picture of a whole group.

Vivid cases are memorable precisely because they are unusual, and memory does not label them that way. One striking story arrives, sticks, and quietly starts standing in for everyone it resembles, which is how a rare event becomes a general belief without any evidence being weighed. The strength of an impression is no measure of how common the thing is.

When a single case starts shaping how you see a whole group, treat it as one data point and go looking for the others. Ask how often this actually happens and who would know. Keep the story, but stop letting it do arithmetic.