In a broader sense, the point is correct yet the point itself is irrelevant. Humans are a very mixed bunch, Muslims included. If a Hindu kills somebody, does that mean that every Hindu on the planet is magically connected to the murder and they should all condemn it until the end of time? No. People make the mistake of pasting other people into distinct groups, then attaching every action of a person/persons to that group, or in other words, guilty by association. You look like these people, you have similar ideals, therefore you are attached to what they do even if you don't have a social connection with them.
The next time you see someone accuse all Muslims of either being violent or being apathetic to violence, read what I said above. I have researched this before, people do it with Muslims and other groups as well, where they taint their own perception of a group even if only one person in that said group does a harmful act. Human beings are tribal, instinctual creatures, sometimes when people are being "bigots" it's not necessarily their own conscious fault.