 Complete the following phrase:  Vehicular ramming has sometimes been advocated as a means to deal with protesters who block public roadways in the United States. Two police officers were suspended and fired in January and June 2016, respectively, for tweeting such advice in relation to Black Lives Matter rallies, which have sometimes been broken up by cars. North Dakota state legislator Keith Kempenich tried and failed to pass a law granting civil immunity to drivers who accidentally hit activists, after his mother-in-law was stopped by 