I still hold to the precise and academic definition of the word “racism.” It is the belief that an ethnic group is intrinsically superior or inferior to other ethnic groups. A person can be racially prejudiced and practice discrimination against people of different ethnicity to themselves without being a racist. I believe it is important to make a distinction between racism and racial prejudice as it makes the task of reducing the injustice and inequality ethnic minorities face within the society they live in a lot easier.
People do not like being accused of racial discrimination (they get prickly and deny it) but they really hate being called a racist (especially if they are not). If you call people racist you are likening them to Adolph Hitler, Idi Amin or members of the Ku Klux Klan. If they do not believe they are superior to people of other ethnicities then to call them racist and to liken them to such monsters is extremely hurtful and a great slander. The employment of such a verbal weapon of mass destruction is going to result in retaliation, not a willingness to change behaviour patterns.
Highlighting that racial discrimination is rife in society is a far less aggressive and far more correct way of dealing with the problems ethnic minorities face every day of their lives. You do not even have to accuse individuals of being prejudiced. It can be treated as something that happens naturally which needs to be stopped if a nation has any pretence to being civilised.
If the Black Lives Matter campaign outside of America had restricted itself to the message that black lives matter instead of making it a war between black people and white people with constant and loud accusations of racist evildoing by all white people both in the past and in the present, it is my belief that at least white people of goodwill would have become more enthusiastic about embracing changes that would make the world a fairer place. As it is, only those who enjoy wallowing in guilt at every opportunity, are drawn to the BLM cause and they would have been already inclined to be sympathetic to the cause.
There are racists in England and people from ethnic minorities face the possibility of being physically attacked by them all the while. This should be a matter for the police. However, it is casual discrimination by people who just do not like change that makes the lives of “the stranger amongst us” a permanent struggle and this is a matter for society as a whole and if you want to change society you must first try to unite society and not deliberately divide it.