I don't think it's a case of people wanting it to be a Muslim or immigrant it's more a fact that almost every time this kind of thing happens anywhere be it in the UK ,Europe or the US is that it generally turns out to be one of those , you can't just call everyone racist because they don't want terrorists and criminals entering our country completely unvetted !!
I am not happy about anyone being injured or possibly killed by anyone be it by a terrorist , Immigrant or British white guy or anyone else and wish all who have been injured a speedy recovery no matter what their background or ethnicity
You can't simply label anyone who is not happy with illegal Immigration a racist, just because they don't believe in having no border controls
You have to remember what is the point of legal immigration and those who have to pay for Visa applications etc if others are just going to get in boats and come in for free costing this country Millions and contributing nothing most of which are not fleeing war zones...France is not a war zone remember !