Police are investigating claims by north west MEP Sajjad Karim that his house was targeted by far right wing activists.
Mr Karim says at least 40 members of the English Defence League gathered outside his family home at the weekend.
He was forced to delay his flight to attend parliamentary business in Strasbourg this week due to safety fears for his wife and two children, aged eight and 11.
He said: “There were at least 40 of them congregated and gesticulating for me to come outside.
“Thankfully the police arrived quickly but I'm not convinced they are taking this seriously enough.
“My primary concern is my family and I cannot leave them until I am satisfied they have the security they need. My children are petrified.”
It is not the first time Mr Karim, a Muslim, has asked police to investigate 'race hate' claims. The letters BNP were written on the pavement outside his home, in the Lancashire village of Simonstone, last year. He also reported a string of abusive emails from activists.
Mr Karim is the subject of several posts on the EDL Blackburn Division's facebook page.
A Lancashire Constabulary spokesman confirmed they had dealt with an incident. She said: “An investigation has been launched to establish whether any offences have been committed and by whom.”
Manchester evening news